Bayern Munich forward Sadio Mane is expected to miss the World Cup as a result of the injury suffered in Tuesday's meeting with Werder Bremen.

Mane started the game but managed just 20 minutes before limping off with a seemingly innocuous injury, with Leroy Sane coming off the bench to replace him in the 6-1 victory.

Bayern had been confident that Mane's injury would not be serious, with assistant Dino Toppmoller stating straight after the game: "He got hit in the leg, which caused a little nerve pain.