I followed the Champions League pool and it was quite interesting when someone predicted that Galasataray would win the match. Galasataray seemed to get quite a lot of attention when they managed to beat Manchester United at Old Trafford, thus increasing bettors' confidence that they could repeat this success, especially since this was a home match against Bayern Munich.
However, my prediction is that it will still be a victory for Bayern Munich, whether something unexpected happens, for example, the player experiences fatigue because they previously played for his country in an international match.
Manchester United almost managed to make a comeback against Bayern Munich but failed and the two are still very different because Bayern Munich looks more solid and doesn't have many problems with its players, while Manchester United is a team whose players are quite problematic so their performances are inconsistent and Galasataray will face a stronger team than Manchester United this time.