Galatasaray's defense is not very good either. They gave many open positions in the Manchester United match and Hojlund punished the Galatasaray defense with 2 goals. It is certain that it will be a difficult match against Bayern Munich, but Galatasaray needs to get at least 1 point in these 2 difficult matches so that their chances of finishing the group in second place increase.
It was too clear from their mistakes in defense but Manchester United were worse than them, how do you score and lead by a goal and then becomes defend less and even conceded an extra goal. I think Galatasaray are going to fight that in their next match against Bayern Munich but will Tuchel allow his boys to sleep on creating chances? I don't think so, regardless of their defensive players + defensive style, Bayern will find an arrrow to pass through that hole because Kane is going to there.
Current performance, Bayern Munich is favorite team for winning upcoming match against Galatasaray although the opponent team on top confidence after defeating Manchester United, but its not difficult for Bayern have quit well performance in Champion League by winning two matches in a row. Difference with Manchester United performance in Champion League, Bayern Munich have more experienced for winning all group matches and Galatasaray is not really difficult opponent team for getting three points.
But Galatasaray could learned with Bayern Munich opponent teams easily scoring goals and seems how weakness with their defense area. Have played two matches, Bayern Munich conceded 4 goals and seems home work for Thomas Tuchel upcoming match have to make clean sheet or Galatasaray will be the next teams scoring goals again.
Galatasaray are not going to be a threat to Bayern Munich, using Manchester United to judge the next performance against Bayern Munich is going to make bookies have a lot money to feed their bellies, the odds were going to be different in favour of Galatasaray but a wise gambler will pick Bayern Munich either straight win but to reduce the risk, a win or draw will do better fairness to their bet since Galatasaray aren't that dumb in their last games but I still think Bayern Munich are going to win this match and will not stop here until they pass the group stage.
Furthermore, inclusion of over 2.5 will also bring some money because I know for sure that Bayern will score nothing less than 2 goals and Galatasaray will want to equalizes as well to have an equal lead.