Maybe last season was Harry Kane's first season so he didn't perform at his best but this season he must have a good understanding with every player so we definitely expect good performance from Harry Kane this season. Harry Kane hasn't won any league title or major tournament title so far, so we definitely want this legendary player to win the German league title next season.
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.