Mauricio Pochettino’s Manchester United challenge: fitness, discipline and one team

Mauricio Pochettino’s arrival at Manchester United is set to bring a demanding reset. The Argentine is due to take charge on 18 November, replacing Michael Carrick, with a contract through June 2029. Former Tottenham defender Toby Alderweireld has offered a clear warning about what comes with that change: players must buy into the manager’s plan, put the team first and be ready to work.

Alderweireld spent four years under Pochettino at Spurs, including the period when they reached the Champions League final. He describes a manager who is approachable, but firm when it comes to standards.

“He is very approachable but you need to follow his plan,” Alderweireld said. “If you don’t follow his plan, you go on the side and you’re not coming back any more.” His message is blunt: individual circumstances can be discussed, but the team comes first. Players who do not accept that, he says, risk being left out.

That demand for unity could be central to Pochettino’s task at Old Trafford. Alderweireld believes the manager will try to build an “us against the world” atmosphere, with the squad working together despite outside noise. He also says Pochettino is deeply involved in the details, following players on and off the pitch and studying video and data.

Alderweireld calls him a “control freak” in a positive sense, explaining that Pochettino treats a player’s body as a tool that must be ready to perform. It is a philosophy that begins with fitness — and, in Alderweireld’s account, leaves little room for easing into the work.

“First of all he made us very fit. Pre-season was brutal,” he said. Pochettino’s preferred football is front-footed and energetic: pressing opponents, playing with a high line and moving dynamically. That approach depends on players being able to run and sustain high-intensity efforts.

The demands may be especially noticeable at United. The source reports that the club rank in the league’s bottom five for distance covered and most high-intensity runs, amid criticism of their fitness and work rate this season. Alderweireld expects the players to feel a sharp change in the training environment, where Pochettino asks for 100% every day.

His account of Tottenham’s Champions League semi-final against Ajax captures the spirit he wants. With Spurs 3-0 down, Alderweireld says Pochettino did not deliver a tactical half-time talk. Instead, he urged the players to fight, be physical and believe that one goal could bring them back into the contest. Alderweireld recalls the team changing the match through intensity and duels.

For United, the immediate test will be whether a squad criticised for its running can meet that standard. Pochettino’s approach, as described by a former player, is not complicated: fitness first, collective commitment, and consequences for anyone who refuses to follow the plan.