In his column on Sky Sports, Merson wrote: "Ruben Amorim, the way he wants to play, is a worry. He won't change. He'll look at it and say 'I've got where I am today by playing the way I play,' using three at the back and high wing-backs. He would have been a perfect fit for Chelsea. They've got world-class wing-backs in Reece James and Malo Gusto, they've got the best holding midfield player in the league in Moises Caicedo. It would fit the players.
"You look at Man United and this system does not suit the squad they've got at all. The two wing-backs are nowhere near it, nowhere near good enough. And they are a big part of this formation working. No legs in midfield. Everything is up against him."