Looking forward to see Amrabat competing in that midfied, the midfied too soft against Arsenal, it needed energy and names like Bruno and Eriksen were absent in that game they did not have a good game and could not beat Arsenal midfielders.
Brighton are one of the sides when building from the backline to the front, with few players absent and Injured for Brighton Man United may have a good chance to win but that defense is too weak. Imagine Harry Maguire saying he wants to fight for his place when Man United should have sent him out on loan or complete sell out. He has never being a good player.
Brighton isn't depend in one or two players, but they're team work club and they always have someone to replace injured player without any issue. They have beat Newcastle and their performance are quite stable, I believe they will beat Manchester United which currently still in development.
Don't hope too much, Amrabat is just a classic defensive midfielder, there's nothing to expect since he was not that good in Fiorentina.
Brighton is always a tough opponent for Manchester United. Last season in the FA Cup we saw a tough battle between Manchester United and Brighton. After finishing well last season, Brighton have started this season again. Brighton is at number 6 in the points table with 9 points after playing four matches. Along with Manchester United, they are at number 11 in the points table with 6 points after playing four matches. Brighton is much ahead of Manchester United in terms of performance this season. Brighton would have won this match if this match was played at Brighton's home ground but if this match is played at Manchester United's home venue then Manchester United will definitely be ahead in this match.