In my opinion, Bayern Munich made the biggest mistake by sending Nagelsmann. Of course, there will be some teams that want to evaluate this. It could be Tottenham, it could be Chelsea. The coming days will show us this. What I see is that he is a very good coach despite being a younger manager. Bayern will realize their mistake sooner or later.
Either it was a mistake or they did the right thing. Because they also appointed a coach like Thomas Tuchel to replace the role of Nagelsmann. Thomas Tuchel is also an experienced coach, so it is likely that under his direction Bayern Munich will become even more solid. But if Thomas Tuchel fails at Bayern Munich then the management will regret it because they made a hasty change of coach.