Amrabat said he will play what ever position put him by Erik ten Hag, I don't think problem with nice performance on debut match with Manchester United and he will play as holding midfielder or Manchester United tactician can use him as defender to make solid defense area. For holding midfielder have many choose for Erik ten Hag but in defender still confused because some player not on the top level and still inconsistency performance.
Have good news with Antony return to the team squad, he has been in training center and potential will be in the list player name for upcoming match against Crystal Palace, now ten Hag not confused with right winger position and automatically Antony will fill that position, for left winger I think not bad ideas giving another chance for Rashford and Rasmus Højlund have put as center forward.
That is the advantage that Ambrabat has because he is able to make a big contribution because he is able to play well even though he is not playing in his regular position. Erik had to do rotations in placing positions for his players because many of the main players were absent due to injury, so Erik had to rotate each of his strategies by assigning players positions that were not appropriate. But this was implemented quite well when Manchester United beat Crystal Palace in the League cup match.
In tomorrow's match Manchester United will face Crystal Palace again. So Manchester United is quite familiar with the condition of their game in the previous match when they beat Crystal Palace. So he must be able to do it again in tomorrow's match in order to get 3 points. Even in the previous match, Maguire played full time in his game in the League Cup match. I think he will also get the opportunity to start in tomorrow's match.