The warning comes at a crucial moment for Carrick, who is preparing Manchester United for the 2026/27 campaign after taking permanent charge of the club. United have already made additions this summer, including Youri Tielemans and Andrey Santos, but Carrick has continued to indicate that further recruitment is required if his team are to compete consistently at the highest level. Recent reports say Carrick wants more additions before the window closes, particularly in areas where the squad lacks depth.
Guardiola’s reported assessment is particularly significant because he knows better than most what is required to compete for trophies in England. Manchester City have spent years building a squad capable of handling injuries, suspensions, fixture congestion and the pressure of competing across multiple competitions. From Guardiola’s perspective, having a strong starting XI is not enough. A club with ambitions of challenging for the Premier League title needs quality options on the bench, because the difference between winning and losing a title can often come down to the players available when key starters are unavailable.
For Carrick, that could become one of the biggest challenges of his first full season in charge. Manchester United have made progress in rebuilding their squad, but there remain questions over whether the current group is strong enough to compete with the deepest teams in the league. United have spent around £85 million this summer, with Tielemans and Santos among the notable additions, but Carrick has acknowledged the importance of adding more quality rather than simply relying on the players already at his disposal.
The issue of squad depth has become increasingly important following United’s recent pre-season preparations. Their 4-2 defeat to AC Milan exposed concerns in several areas, particularly at left-back, where the club have struggled to establish sufficient depth. Reports have also highlighted the need for additional midfield reinforcements, suggesting that Carrick could find himself under pressure if injuries begin to affect his strongest lineup.
Guardiola would understand those concerns better than almost any manager in the Premier League. At Manchester City, he has repeatedly emphasized the importance of having competition for places throughout the squad. When one player is unavailable, another must be capable of stepping into the team without causing a major drop in performance. That philosophy has helped City remain competitive through long seasons, and it is something Carrick may need to replicate at Old Trafford.
Manchester United’s situation is particularly complicated because the expectations surrounding the club remain enormous. Regardless of the changes made behind the scenes, United are expected to compete for major honours. A manager can receive patience for a rebuilding project, but poor results quickly create pressure at Old Trafford. Carrick therefore cannot afford to enter the campaign with obvious weaknesses that opponents can repeatedly target.
The former United midfielder has already shown that he understands the importance of strengthening his squad. Reports indicate that the manager wants further additions before the end of the window, with a left-back and another midfielder among the positions being considered. The concern is that every day that passes without reinforcements gives Carrick less time to integrate new players into his tactical system.
That timing could prove crucial. Manchester United are due to begin their Premier League campaign against Hull City on August 22, meaning the opening weeks of the season will arrive quickly. Carrick needs his squad to be ready from the beginning because a slow start could immediately increase pressure on the manager and the club’s recruitment department.
One of the biggest questions surrounding United is whether their midfield has enough balance and physicality. Tielemans brings experience, passing quality and leadership, while Andrey Santos provides another option in the middle of the pitch. However, adding players is not simply about increasing numbers. Carrick needs footballers who can complement Bruno Fernandes, Kobbie Mainoo and the other midfield options while providing the intensity required to compete against elite Premier League opponents.
Guardiola’s philosophy offers an important lesson in this regard. Manchester City have rarely relied on one particular style of player. Their midfield has traditionally contained players capable of controlling possession, progressing the ball, defending space and maintaining intensity. For United to close the gap on the strongest teams, Carrick will need similar versatility throughout his squad.
The defensive situation is another concern. United may have several experienced centre-backs, but the demands of a long campaign can quickly expose a lack of reliability or depth. The Guardian recently highlighted defence as a central concern for Carrick, particularly regarding whether his group of centre-backs can withstand the demands of a long season.
At full-back, the situation could become even more difficult. Luke Shaw’s fitness has been a recurring concern, while United are still looking for greater depth on the left side. A team attempting to compete across domestic and European competitions cannot afford to have one injury completely disrupt its tactical structure.
The importance of recruitment is also connected to the expectations placed on United’s attacking players. The club have several talented forwards, but Carrick needs consistency from them throughout the season. If injuries or loss of form affect one or two key attackers, the manager must have alternatives capable of maintaining the team’s attacking threat.
Marcus Rashford’s situation adds another layer of uncertainty. The England international has returned to the United setup following loan spells and is once again part of Carrick’s plans, although his long-term future remains uncertain. Recent reports say Carrick has welcomed Rashford back into the squad while the club continues to assess his situation.
For Carrick, keeping Rashford could effectively provide an additional attacking option without requiring another major transfer. But depending on how the situation develops, United could still need to recruit if the player eventually leaves.
There is also a psychological dimension to Guardiola’s reported warning. Manchester City and United are separated by one of the biggest rivalries in English football, meaning Guardiola understands the pressure that comes with managing in Manchester. He also knows that United cannot afford to repeatedly fall behind their rivals in squad development.
Carrick has already experienced the intensity of the Manchester derby from the United dugout. Earlier in 2026, he led United to a memorable 2-0 victory over City in his first match in charge, a result that demonstrated his tactical ability and immediately raised expectations around his potential. The Premier League itself highlighted how Carrick outwitted Guardiola in that match.
That victory showed that Carrick is capable of competing tactically against elite managers. But one match is very different from an entire season. Over 38 league matches, the quality and depth of a squad become increasingly important. A manager can produce outstanding tactical performances, but injuries, fatigue and fixture congestion eventually test every squad.
That is why the transfer window could have a major influence on Carrick’s first full season. If United make the right additions, Carrick could have the flexibility to rotate his squad and protect important players. If they fail to strengthen, the manager could find himself forced to use the same core group repeatedly, increasing the risk of injuries and fatigue.
There is also the possibility that United’s problems could become more visible during the winter months. The first few months of the season can be deceptive because players are generally fresher and injuries may be limited. But once domestic competitions, European football and international breaks begin to accumulate, squad depth becomes essential.
Guardiola’s Manchester City teams have demonstrated this repeatedly. City have often been able to maintain their level even when important players are unavailable because Guardiola has multiple options for each position. Carrick will want Manchester United to reach a similar level of flexibility.
However, it would be unfair to suggest that United have done nothing in the transfer market. The club have already strengthened important areas, and Tielemans’ arrival has added experience and leadership. The Belgian midfielder has spoken positively about the challenge of joining United and is expected to play an important role under Carrick.
Andrey Santos also represents an investment in the future, while other players remain available to Carrick as part of a squad that has undergone considerable change. Reports indicate that United have also allowed numerous players to leave while reshaping the team for the new campaign.
The problem is not necessarily the quality of the players already signed. Instead, it is whether there are enough of them.
For Carrick, the ideal scenario would be to enter the season with competition for every position. The manager would then have the freedom to change his tactical approach depending on the opponent rather than being forced into certain selections because of a lack of alternatives.
That could become particularly important against the Premier League’s strongest sides. Arsenal, Manchester City, Liverpool and Chelsea all possess squads capable of punishing weaknesses. Tottenham and other ambitious clubs are also investing heavily, meaning United cannot assume that their traditional status will automatically guarantee success.
The Premier League has become increasingly competitive, and even clubs outside the traditional top six can cause problems. A team that is not prepared for that level of competition can lose points unexpectedly, and those dropped points can eventually make the difference between Champions League qualification and another disappointing campaign.
For Carrick, therefore, the message is straightforward: strengthening the squad is not simply about satisfying supporters. It is about giving the manager the tools required to implement his football over an entire season.
United supporters will understandably expect Carrick to be judged on results, but the manager will also expect the club’s hierarchy to support him. If he believes the squad needs more quality and the board fails to deliver, it could create frustration inside the club.
The pressure will become even greater if injuries strike early. If United lose key players and the replacements are not strong enough, critics could argue that Carrick should have been given a deeper squad. At the same time, if new signings arrive too late, Carrick may not have enough time to properly integrate them before the most important fixtures begin.
Ultimately, Guardiola’s reported warning should be viewed as a reminder of the unforgiving nature of Premier League management. Carrick may have the tactical intelligence, experience and connection with Manchester United to succeed, but even the best manager needs a squad capable of executing his plans.
Manchester United have already taken steps toward rebuilding their team, but the summer transfer window is not finished. Carrick still has an opportunity to address the weaknesses that could become problems during the campaign. Recent reporting suggests that further recruitment remains a priority, particularly at left-back and in midfield.
If United manage to complete the right deals, Carrick could begin the season with a squad capable of surprising their critics. The early signs of his managerial reign have already shown that he can organize the team effectively and compete against elite opposition.
But if the club decides that the current squad is good enough and refuses to make the additional investments Carrick believes are necessary, Guardiola’s reported warning could become increasingly relevant. A long Premier League season has a way of exposing weaknesses, and Manchester United cannot afford to discover their squad is too thin only after the transfer window has closed.
For Carrick, the coming weeks could therefore be decisive. The manager has already made it clear that he wants Manchester United to compete at the highest level. Now the club’s hierarchy must decide whether to give him the additional tools required to make that ambition realistic.
The message from Guardiola, whether interpreted as a direct warning or simply an observation about the realities of elite football, is clear: Manchester United cannot expect Carrick to perform miracles if the squad is not strong enough. The manager may be responsible for tactics, preparation and results, but recruitment remains one of the most important foundations of any successful season.
With the new campaign approaching rapidly, all eyes will now be on Old Trafford and the transfer market. If United strengthen decisively, Carrick could have the platform to build something significant. If they do not, the pressure on the former United midfielder could become enormous before the season has even reached its most demanding stage.
And that is ultimately why the final weeks of the transfer window could be just as important for Carrick as the opening weeks of the Premier League season itself.
