I think Lewa already used his full potential at Bayern and at Barcelona he is just a shadow of is former self and I'm not saying this in a bad spot , this is just the plain truth. This also doesn't mean Lewa is not a great striker anymore but we can see that is has a certain age , we can see he lost his touch , we can see he lost his reflexes and also he seems tired.
Regarding his transfer , I cannot see any team from europa that would want him so my guess would be MLS or Saudi Arabia for him.
Based on my personal point of view, Lewandowski will still be heavily relied on by Barcelona or Xavi. why, yeah because after all Barcelona still needs his services as a center forward in their squad. at least, before they get an ideal replacement in the front line. in other words, Lewa will remain the main option, especially if he doesn't experience any problems, especially those related to injury. Lewandowski's presence is very crucial, especially this season. not only how he has to score goals as his job as a pure striker, but precisely because his stability will be very helpful for Barcelona's young players, like Gavi or Pedri who are often given instructions by Lewandowski when setting strategies, even though he is no longer young, in fact he has entered the age of 35. however, if Xavi is able to maximize his patterns, systems and strategies, Barcelona should now be a competitive team. unfortunately, because they experienced a storm of injuries, Barcelona was unable to appear consistently in every match. plus, Barcelona's defense line has really experienced a decline in performance unlike last season. however, we agree that the age factor cannot be avoided by any great player and Lewandowski is no exception. however, at least Lewan is still very useful for Barcelona. now the problem is with Xavi, how he has to find an effective formula for his squad when playing match after match. as for rumors of Lewandowski's departure, I actually haven't heard any news. it could be, because currently I don't really follow developments regarding rumors or gossip. but as far as I know, Lewandowski once made a statement that he wanted to end his career at Barcelona. whether Lewa will leave for another club or league, we'll see what the results will be.