At the moment Naglesmann has really made Mane fill in the position left by Lewa and this is still going well with the goal he scored in the friendly but it looks like he has to work hard now.
I would be not surprised if we will see Mane on the Lewandowski position , Gnabry and Mane looks also a good combination for what i have seen.
Gnarby and Mane are not too bad to try but it looks like for now Naglesmann will still use one striker up front but still be supported by some of their midfielders and second strikers which are the hallmark of Bayern's formation.