The time Arsenal has to face Bayern Munich is very limited, because before facing Bayern Munich in the UCL there are 3 tough matches and it will drain the players energy. So I'm quite worried if Arteta has difficulty making many rotations. At the end of the month against Man City, you definitely need a solid composition of players and of course the main squad must be deployed. The next 2 matches are no less important because they are an opportunity to get 3 points and Arteta cannot underestimate his opponent.
So based on a fairly busy schedule, I wouldn't expect much if even a draw against Bayern Munich would be good enough. However the issue of dark history is also a shadow for Arsenal players, as if Bayern Munich will use it to break the spirit of their opponents.
Actually with the look of things Arsenal may likely be kicked out by Bayern Munich on the champions League quarters finals because Bayern Munich are always more favourable than Arsenal on champions league that's why they have more good history on champions league than Arsenal, although is been a while Bayern Munich meet Arsenal but I think Bayern Munich has more opportunity over Arsenal on that match and also considering the fact that champions league is not like premier League that are more easy for Arsenal to perform really good but in champions league the matches are mostly difficult because all the clubs are very strong, although I'm not disputing the fact that Arsenal is not in there good form but the truth is that Bayern Munich is a very consistent team when it comes to the champions League matches and also if you you check there last meeting with Liverpool you will see how good Bayern Munich is and beating Liverpool at the end, so if bayern Munich could perform that good it may likely not going to take much time for them to win Arsenal. So I would just say that Arsenal should focus more on there premier League matches so that there attention will not be divided.