As for me i think I will prefer one player to go for the other, their combination don't seem to be as expected, Sallah is good quite alright and Mané is skillful as well, but one thing i noticed about Mohammed Sallah was that his performance has dropped drastically unlike before, its on a rare case you will see Sallah not making a goal in any of his match, so its either Sallah go nd leave Mané behind or other way round for them both, i think they should have a rethink in that aspect and i will personally prefer Mané as against Sallah to stay.
Mane is a major force in Liverpool's forward force. His contribution does not show through goals as Salah's, that's why a lot of people under look him. Whenever he's missing, Liverpool tends to struggle to score goals. The day he leaves Liverpool is when they will realize how much of a gem he was.
I think he will do well in Bayern Munich.