Harry Kane has scored 1 goal and 1 assist in the Champions League in 2 appearances, while Kane has also scored 8 goals and 4 assists in 7 appearances in the Bundesliga. I believe Kane et al will be difficult to stop and Tuchel's plan for that match is to win, but if Galatasaray manages to win points in that match then I believe they will have a good chance of qualifying for the last 16.
The odds are not in favor of Bayern Munich in the champions league this season; their performances under Tuchel has not been anywhere near excellent or consistent; and in the UCL, Conceding 3 goals to a poor Manchester United size depicts that the ucl is not for Bayern Munich this season. Will Tuchel boys hit the quarter finals; i believe thats happening.
Now Bayern can only hope for a kind draw, if they want to play the champions league finals next year.
In as much as I don't rate Bayern Munich, it doesn't mean they are not up to any task. They conceded 3 goals from Manchester United, didn't Manchester United concede 4 goals as well, you don't expect Manchester United to lose easily to Bayern Munich, do you? The odds that day wasn't too different between Bayern and Manchester because even the bookies know what's up but since they lost that match, it was becoming too easy to understand Manchester United's next move but for Bayern, I think Galatasaray are good form but they are not going to have Bayern so easily, not that easy.
You know one thing about the Champions League, it is the teams that bragged the most always end up in the trash bin, not saying Bayern Munich will go to the final as to oppose what you said but I hope you understand my point better if you check the last year Champions League, you will know better. I have not seen any weak spots around Bayern Munich, not an injured players, so what is not stoping them from achieving more. I think all this is because we are still in the group stage, if we get to knockout stage, lots of teams many hope on with their bets will by then be at home while the least expected teams will still be around striving to get that final cup.