Remember Sado mane was signed for Bayern, Lewandoski is a legend no doubt but he can still be done without. It is up to the head coach and the players to decide if lewandoski's transfer to Barcelona will affect their performance next season. It is still too early to predict who wins the Champions league and the Bundle liga title. For now all big clubs including Bayern have equal possibilities but towards the middle of the season we will know which club did the best signings and which club were able to manage the stars they bought.
You are right, It is not possible to predict which team will win the title now. We have seen the PSG team perform erratically despite having many star players in the squad. And so the team should not only have talented players, these players should adapt to the team. Performance must have stability and consistency. Otherwise, it will be very difficult to win the title. To stabilize the team, the coach must play an important role.
It's still too early to talk about who will come out as champion. However, when looking at all the teams participating in the Bundesliga, Bayern Munich is the team with the greatest potential to win the title again. We can't say it's not, because from the available data, Bayern Munich has everything. But still, I want the Bundesliga to be more competitive next season, at least Bayern Munich can't move freely.