The injury occurs just 13 days before Senegal’s opening World Cup match against the Netherlands.
In a statement released on Wednesday, Bayern Munich stated that “more examinations will come in the upcoming days.”
Senegal, the reigning African champions, will play the Netherlands in their opening Group A match on November 21 before facing the hosts Qatar and Ecuador. Mane, a two-time African Footballer of the Year, is a key player for Senegal.
With an injury “to the head of his right fibula,” the 30-year-old was forced to leave Bayern’s 6-1 victory over Werder Bremen after 20 minutes of play.
In the penalty shootout victory over Egypt earlier this year, Mane, his country’s all-time leading scorer, scored the decisive goal to give Senegal their first Africa Cup of Nations victory.