I am more consign with Man Utd central defence line without Varane, it's has not been strong with Martinez and Lindelof and how are they going to fare against Brighton in defence? Brighton had been brilliant this season and hadn't change their style of play despite selling some of their quality players, recall Brighton defeated Man Utd at old Trafford at the beginning of last season thus I am expecting a tough match against the host who would miss the services of the duo of Antony and Sancho in their respectively, Man Utd hasn't been in their best form this season having won two matches and lost two matches I am afraid they might lose their match tomorrow.
Man United is indeed in potentially ragged condition because they had to lose many players in their first team. The right-side position might not be too worrying because Man United still has Pellistri and Garnacho who can fill it. But for the defense line, it can be a serious problem because the substitute player in this position doesn't really have a reliable performance.
Even though Man United will be playing at home against Brighton but with their current condition and performance, I think this will be a tough match for them. They still have a chance to win the match, but this can only be achieved if they put in all their efforts and their defender doesn't make any stupid mistakes.