There are times a player would want to be sold out probably because the situation at the team isn't such that is really getting them to perform well because they have some issues with players or coach and sometimes the management but then the same player may be of a very good performance such that will cause the team ro be reluctant about selling him out .
This is exactly the case with kimmich. He has remained consistent with his performance despite the issues he has with the coach all the time he's been in Bayern last season, it's not doubt that other teams will be wanting him because of the kind of performance he's got and the fear of loosing him has made Bayern very reluctant,they now have a new coach he could try staying a season long again and see how well he would blend in with this coach maybe it may become the kind of environment he can still thrive in again.
It’s one thing how he plays, and a completely different thing is that he may disagree with the coach’s opinion and turn the players against the coach, thereby destabilizing the situation in the team. By the way, this is precisely why Humels was sold from Dortmund, and Terzic left the team because of this. In the case of Kimmich, Tuchel also left the team largely because of this, which means that Kimmich is a problem player, although he is good on the field, but he can cause a lot of problems in the dressing room if he doesn’t like something, so other teams will think twice before taking such a risk.
It is now known that Kimmich wants to stay in Bayern, he recently built a new house in Munich so he probably won’t want to move anywhere, but he has stated that he would like to play more in midfield, and with the arrival of Palhinha this could be problematic, let’s see if he can solve this with the Кompany, or there will be a new conflict.