For now it seems like Mane is enough for Bayern Munich. Because while Mane is performing impressively Choupo-Moting is also able to show the expected performance. Choupo-Moting is doing even better than the expected because he is very productive as for scoring these days. Maybe the reason why Bayern Munich don't want to sign another striker yet is this now.

As a result I think they won't sign a top striker in January and they will just wait for next summer. They have already started to score so many goals in a game just like in the old times.