Just like you, I think Bayern Munich will be the leader of group. I agrre with you Manchester United still has a chance to finish second in the group. However I don't think Manchester United will win their remaining four matches. For Manchester United to be second in the group, Copenhagen and Galatasaray must make a lot of mistakes. I think Copenhagen and Galatasaray will not make that many mistakes.
I still have high hopes on Manchester United against both clubs mentioned and that is because Manchester United still remains the most experienced among the two of them and should be able to come top in the group, so let's not make a rushed conclusion on the matter and where Manchester united will end the season and at which level.
Although we have to wait out the time to see if things may change along the line, and if it didn't change then we have to accept whatevethesese clubs can come up with.