Manchester United won't be able to qualify, even though the possibility is small, they are not really ready to be in the UCL this season, they still have a lot to improve in their squad because in my opinion they should focus more on the EPL and improve their position so they don't get worse. in the domestic league, they can still have the opportunity to get another UCL ticket next season.
Of course they need more time to overhaul everything to make it better next season, I'm also not sure from the start they can qualify from the group because it looks like there are a lot of things they are not ready to face in the UCL this season, whatever it is, Manchester United still needs to learn a lot more. much more from every defeat they experience and improve it afterwards to become a better team.
The scenario is that if Man United wants to qualify, they must win against Bayern Munich while hoping that Galatasary will draw against Copenhagen. If they win against Munich, MU's points will be 7, whereas if Copenhagen draws against Galatasaray their points will both be 6.
If you win against Bayern Munich, but in the Galatasaray vs Copenhagen match, someone wins, they will qualify for the UEL, for example Man United wins against Munich with 7 points, whereas if Copenhagen wins against Galatasaray the points will be 8 so those who qualify for the last 16 will be Bayern Munich and Copenhagen while Man United will have 7 points. Finish 3rd which means welcome to UEL.
But the question is, will Manchester United be able to win against Munich?
There's no better way to ask the question! Manchester United will need a miracle to win against Bayern Munich. It's football and anything can happen but Manchester United would find it difficult even of Bayern Munich have qualified completely for the knockouts.
But personally I double doubt they'll be taking the chances they have when they could not when they was leading three goals to one against Galatasaray.
Galatasaray versus Copenhagen must have a winner at the end of that game believe me. With the way Galatasaray approached Manchester United, they could do same against Copenhagen who had a point to share during the first game in the month of September.