Manchester united would revive their hope of qualifying for the next round if they best Copenhagen home/away, however Copenhagen is not an easy club to play against with the style of football Manchester United is playing i doubt if United would be able to win them in both games maybe they could win one and draw the other cause they don't even have a good defence line that would play week in an out due to numerous injuries from that position this season, and I feel that game could cause more injuries for Manchester United.
It's too bad Manchester united has reduced to this level where they'll be hoping on a 1-0 win against Copenhagen, if it were in Sir Ferguson's era they would comfortably beat Copenhagen home/away and could probably be leading their group table, Erik Ten needs to change his strategy and trust in players like Gernacho and Erikson.
If Man United is successful in the doubles match against Copenhagen, then their chances of qualifying for the round of 16 will be the same as Galatasaray. At least it can give the fans a little hope after their previous two defeats, and I think United should be able to make good use of it. The performance of the Ten Hag squad has improved, this performance should be maintained again for the important match against Copenhagen. I think if Ten Hag fails to bring The Red Devils squad through to the last 16 then it is very likely that he could be fired, so in any case United players have to work well to achieve this important victory.
United will act as hosts and this is very profitable, because they will get full support from their own fans. On the other hand, Copenhagen, who currently has one point in Group A, certainly should not be underestimated, I predict United will achieve a narrow victory. Ten Hag must have the courage to take a firm stance against players who do not want to work together as a team, and cannot give their best performance.