If Galatasaray are to win this match, then they will need to capitalize on the weaknesses in Bayern Munich's body of work. Yes their defense has been the highlight of their few matches, and that should be exploited by Galatasaray by creating quick goals. But whether Bayern Munich can apply a better defense or not in this match? That is the problem, if Bayern Munich can be better in defense obviously it will be a 2 times more difficult task for Galatasaray. Actually, they don't need to target victory, especially with a very strong opponent, a draw is a good result for them.
In the upcoming match, there may be some who doubt Bayern Munich's performance because Galatasaray has almost the same strength but it is impossible to beat Munich.
Let's just look at all the players that these two clubs have, of course you can realize that both clubs have almost similar performance but are still superior to Bayern Munich and in this round it looks like Munich will still lead group A and for this match there is a possibility of ending in a draw.
If Galatasaray plays with a complete squad and makes good use of home advantage, then they have the opportunity to hold Bayern Munchen to a draw. Even though they managed to beat Copenhagen and Man United, the opportunity to beat Munchen is really difficult to realize unless Galatasaray has great luck and Munchen experiences a decline in performance. However, the match will be held after the international break, Galatasaray and Munchen will send representatives to the National Team, fatigue due to the busy match schedule will be a challenge for both sides.
The group stage matches have only lasted two matches and there has been a slight point difference in group A. Man United has lost momentum and is no longer the favorite with Copenhagen, now Galatasaray opportunity to qualify as group runner-up is increasingly wide open with Munchen leading as group A winners.
I definitely wouldn't say that it is impossible to beat Bayern Munich. I would say that it is possible, but it is not very much probable for Galatasaray to be honest. After all, Bayern Munich is a better team compared to them. I know a lot of people might actually disagree with me, but that is the truth. I also predict Harry Kane is going to score in this match. If I recall correctly the last match of Bayern Munich, which was against Freiburg is the only match in Bundesliga that he did not score for Bayern Munich.
Anyway, I don't see Bayern Munich losing this match. The worst-case scenario is probably going to be a draw.