The Champions League round of 16 matches kick off in this month and ahead of Bayern Munich vs Chelsea, winger Ivan Perisic is said to be a doubt.
The 31-year-old is on loan with the German giants from Inter Milan, and has scored four goals in 15 Bundesliga outings.
Speaking to his press conference this week, Bayern interim manager Hansi Flick said: "He has a fracture at the outside of his ankle.
"It will take at least four weeks until it is healed and only then he will be able to start with building up training again."
Bayern is currently on top of the Bundesliga table, after a 3-1 win over Mainz 05 at the weekend.
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