Speaking to SportLens, Stam said: “We could see what Erik ten Hag was trying to do at Manchester United and how he wanted to play, from his time at Ajax, but the players struggled. That is down to both the manager but also the players and whether they can execute the game plan that they are taught when it comes to matches.
“That’s the same big question now with Amorim as it was with Ten Hag, can the players adapt and dominate games in his three-at-the-back system. At the moment it's still not very dominant in how they play within the new system despite there being a few wins which was similar for Ten Hag during his start at the club.
“I think the manager knows that the team isn’t up to standard yet, that’s why there will also be interest in the transfer window and looking at players that might need to be signed and also players who could head in the other direction.
“You need defenders who can play in big spaces, especially when the wing-backs are high up the pitch and two midfielders who can be good in possession but also have the legs to get up and down the pitch.
“The forwards need to be able to make runs in behind but also drop into deep positions, that’s why the manager is testing everyone and seeing if they can perform to his standards. We’ve seen some players struggle with the intensity of the Premier League.”