Apart from Nubel, I think Bayern Munich seems interested in the Argentinian goalkeeper in the World Cup - Emiliano Martinez to be their main goalkeeper this season. Neuer looks set to be out for quite a while due to injury. Nubel seems to have no more interest in returning to Bayern Munich, but anything can happen in the end. So it's true, Nubel may not want to be a substitute player who sits more on the bench throughout the season.
To be honest, I am surprised by how FIFA evaluates a goalkeeper at the World Cup, in my opinion, Emi Martinez's performance is very standard, even Croatian and Moroccan goalkeepers are much better imo. in the EPL (he is the goalkeeper of Aston villa) emi martinez is not a goalkeeper who performs brilliantly so that's why I see Bayern is too greedy and feels rushed looking for a replacement neuer.
Even if Bayern lose their game against Leipzig and Freiburg win theirs against Wolfsburg, this will not affect their position in the standings in any way - Bayern have 4 points of advantage and have the right to make a mistake. A very comfortable position, given that Bayern will have to be distracted by super important games in the Champions League. But even with this in mind, I expect that the gap between Bayern and everyone else will increase and not decrease.
Bayern bounced back after a poor start to the season and shifted the position of union berlin which had been at the top for several weeks. currently, the difference in points between Bayern and Freiburg (which is in 2nd place) is 4 points, even though the chance for Freiburg to shift Bayern is still big but Bayern will definitely use all their resources to keep the team strong and stable until the end of the season, and now (from what we've heard) Bayern's main target is to find a replacement for their injured goalkeeper.