LONDON -- World heavyweight champion Tyson Fury says his rematch with Wladimir Klitschko has been postponed after the British fighter hurt his ankle in training.

Fury didn't give a new date for the fight, which was scheduled to take place on July 9 in Manchester.

Speaking Friday in a video posted on his Instagram account, Fury says he sprained his ankle 10 days ago while running, and that doctors said to keep off it for six-to-seven weeks.

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Message to all my fans. About the fight. #willbebackonsoon. @peterfury @hughiefury @hennessysports @boxnationofficial @klitschko_official

A video posted by Tyson Fury (@gypsyking101) on

Fury says ''the fight will be postponed. Sorry to all fans, to let you all down, but injuries do happen.''

Fury won a decision over Klitschko in November in Duesseldorf, Germany. He was set to defend his WBO and WBA belts in Manchester.