this rumor won't be that hard to believe, Tuchel is not a ba coach at all, and to be honest he is better than Nagelsmann, so with bad results coming like losing against Barcelona in the Champions League and another bad result in the bundesliga, there could be a very big chance that they will dismiss Nagelsmann, and Tuchel is available so why not, i can see it happening for sure.
Indeed, since the arrival of Julian Nagelsmann at the start of the 2021/22 season, Bayern Munich's performance outside the Bundesliga has not been too impressive, for example, Munich's failure in the UCL last season was one that attracted attention. Although Bayern Munich still managed to defend the Bundesliga title, Munich's performance outside the Bundesliga maybe a consideration for coach Julian Nagelsmann's career with Bayern Munich in the future.
Honestly, the Bundesliga title is absolutely nothing for Bayern Munich to defend at this moment. And right when we started thinking that the main target is going to be the champions League title they started performing badly in the Bundesliga as well. First of all, like a lot of other people, I also thought that this is because of Robert Lewandowski not being on the team anymore. But a lot of people are going to agree that Bayern Munich is a good team overall and not having Robert Lewandowski in the team is not something that is going to absolutely destroy the team. So now I also think that the coach might have some problems with his tactics.