Talking about Bayern Munich not signing more players during this transfer window, I feel that they have good players and would not waste money to sign more unless if they feel luge they have some positions that need replacements or if any of their important player leave the club anytime from now.
Bayern Munich signing Harry Kane last season was one of the best thing they did last season because he was able to cover up the space of Robert Lewandowski ho left the team to Barcelona but despite winning trophies last season i still think Harry Kane proved himself enough looking at the numbers of goals he scored in all competitions last season.
The Bayern Munich team may still need to bring in few new players to add to the current squad to help strengthen the team more even though they have good players already and I think the current manager can still achieve a good result of they end up not bringing much players in the team.
On the other hand, the fans main concern actually lies in Kompany managerial abilities, whether Pep Guardiola pupil is capable of managing a team as big as Bayern Munchen. However, I think Kompany can lead Bayern Munchen to success, even though that can only happen in the Bundesliga. Meanwhile, to achieve success in the Champions League, it seems Kompany needs more time and experience. Anything can happen, Kompany just needs support to do his job well.