Mane is not happy about it and he shown his feelings many times. Even Salah made more key passes to Mane but it looks like it was too late to improve their relationship and eventually we see Liverpool failed to convince Mane to stay.
He want to move to another club at which he feels he will get better recogition. He chose Bayern but I don't know will he achieve it in Bayern. He might achieve it if Bayern sells Lewandowski and he will become their main striker. Then he will be a core of Bayern attacking system. If Lewandowski does not move, Mane will have to play at either left of right swing and his position will be like in Liverpool. Something is closely to a second most important player after Lewamdowski.
We have to wait till the transfer window is over before we can start saying Mane and Lewandowski will play together,because as it stands now,Lewandowski has set his mind on leaving Bayern Munich,he wants to test other league and see how well he can do there.So if Lewandowski is no longer there,I know Mane will be the only player that will steal the show,and that will give him the recognition that he deserves,let's not forget that Mane really wants to contest for the world best footballer,and Bayern can offer him that.Therefore, Mane has no option but to choose Bayern.
We'll need a little time to see if Mane plays without Lewandowski's shadow, or if he's the only one with a role in attack. As we know that Bayern Munich repeatedly rejected the offers made by Barcelona, I am waiting for the final decision from Bayern Munich with a clear statement. Because until now they have not issued a statement regarding Lewandowski.