Mainoo’s recent run has changed the conversation. After coming off the bench in the opening-weekend defeat by Hull, he featured against Ipswich and Everton before starting the Champions League victory over Sabah.
Across those three appearances, he completed 201 of 211 passes. The numbers underline a player growing increasingly comfortable as a central outlet, but his value is not limited to safe possession.
Mainoo has looked more willing to receive under pressure, connect short passes and help United move through the middle. That fits closely with Carrick’s desire for closer combinations and quicker understanding between his midfielders.
The improvement has also been visible without the ball. Mainoo made a game-high 15 defensive contributions across the Ipswich and Everton matches, offering a reminder that his game is becoming more rounded.
That balance matters alongside Tielemans. United need technical quality to build attacks, but they also need midfielders capable of closing spaces when possession is lost. Mainoo’s ability to contribute in both phases could make him particularly valuable against City’s movement and passing.
Mainoo’s rise comes after a difficult summer and uncertainty over his long-term role at United. The club’s midfield rebuild has created fresh competition, yet his performances have made him increasingly difficult to overlook.
Sunday’s derby should provide the clearest test yet. If Mainoo can impose himself against City’s midfield, Carrick may have more than a temporary solution: he may have found a key piece of his midfield plans.