It's true that it won't be easy for Mane to replace Lewandowski at Bayern. Although Mane is also a very good player, because he has shown
an extraordinary form with Liverpool.
Lewandowski is a star in Bayern and Mane exactly cannot replace him as the star. I know that Mane is also a great footballer, but he needs more time to prove that he can do better for the club. Although it may not be fair for him because he will probably be compared again and again to Lewandowski.
It is good enough if we appreacitae his efrot and let him do his best right?