According to Bayern Munich official news, the 18-year-old midfielder Lennart Karl suffers from a muscle fire tear on his right thigh.

FC Bayern Munich Official Announcement:
Lennart Karl is out for the time being.
The 18-year-old attacker has suffered a muscle fiber tear in the back of his right thigh. This was confirmed bny an examination from the FC Bayern medical team.
Wishing you a speedy recovery, Lenny!
