I was thinking about what Bayern Munich needed to improve to be stronger next season... I assume it is obviously the defending. They conceded 45 goals in the Bundesliga last season which is huge for a title challenger. 
They don't need any transfer for the attacking line. They were the most productive team of the season by 94 goals you know. The only thing they can do is to find someone for Choupo-Moting's place as he is leaving. They were looking for a centre-back as far as I know. Jonathan Tah is a target for them currently. He would be a great addition honestly. I don't think Upamecano is performing well. He tends to make simple mistakes a lot. Tah might be a good replacement for him.
They don't need any transfer for the attacking line. They were the most productive team of the season by 94 goals you know. The only thing they can do is to find someone for Choupo-Moting's place as he is leaving. They were looking for a centre-back as far as I know. Jonathan Tah is a target for them currently. He would be a great addition honestly. I don't think Upamecano is performing well. He tends to make simple mistakes a lot. Tah might be a good replacement for him.