Bayern Munich have realized the importance of signing a solid centre-forward already. The previous season was really problematic for them for this reason. They were away from their consistency and productivity than their times with Lewandowski. It isn't a thing that they can do with a striker like Choupo-Moting or using Mane as a striker.
Kane is just the kind of a striker they would make use of now. He is one of the closest centre-forwards to Lewandowski in terms of role. Kane can even be more helpful for his teammates as well. Because he likes to make assists in addition to his scoring skills as well.