Bayern Munich's need of a striker is getting bigger by every week. Some people believed that they would still do a good job with Mane there but they couldn't do this so far obviously. Because Mane isn't mainly a striker in the end. Rather than playing like that, we need to see him on the wing more. He should be allowed to play similar to his role at Liverpool. They need to solve the striker problem until the end of the winter transfer window. If they don't bring anyone in the middle of the season then the remaining time period also would be very tough for them.
I know that it is really hard to find and convince a striker who can contribute as much as Lewandowski in the middle of the season. But if they want to be successful this season the only way seems like dealing with this quickly.