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.
For sure Nübel dosnt want to be again on the bench when Manuel Neuer is back again and full of health.
Emiliano Martinez is also already 30 and maybe they try to get him for at least an contract of 3 or 4 years.
This would be pushing his Career , but i think that there also other Clubs now will be knocking on his door.