Bayern Munich should keep their attacking line as strong as possible as they have started to show a high level performance in the recent times. Mane needs to be treated as good as possible not to miss their PSG game at least. Besides Choupo-Moting might also leave the team as it seems. They need to keep their score contribution as big as possible.
For doing this we might see an offensive move in January by Bayern Munich maybe. I actually think that they were planning this for next summer but they might need this even in the middle of the season. The Bundesliga isn't much difficult for them maybe but they need to stay strong for the Champions League.
Actually this is not too worrying because Mane will definitely recover when the Bundesliga restarts and indeed this is a certainty about their current attack line actually they are quite strong too in my opinion even though they still feel this is lacking because they still have to look for players with quality and same instinct as Lewandowski and still not there even though Choupo-moting is still doing his job well.