Tyson fury wladimir klitschko
Tyson Fury has pulled out of his rematch against Wladimir Klitschko for a second time Getty

World Boxing Heavyweight champion Tyson Fury has postponed his rematch with Ukranian fighter Wladimir Klitschko for a second time after promoters claimed that he was "medically unfit". The Great Britain boxer was set to defend his World Boxing Association (WBA) and World Boxing Organisation (WBO) titles against Klitschko on 29 October.

The promoters did not disclose the full extent of Fury's injury but have confirmed that his condition is too severe to allow him to participate in the fight. This is the second time that the current champion has pulled out of the rematch. The first instance saw the 28-year-old withdrawing from the original July 9 rematch date after suffering from an ankle injury.

The re-arranged match would have happened on 29 October at the Manchester Arena in England. However, no date for the clash has now been set.

"It is with the deepest regret that we have to announce that the world heavyweight championship rematch between Tyson Fury and Wladimir Klitschko, scheduled to take place on the 29th October 2016 at the Manchester Arena, will not be going ahead. Tyson has, this week, been medically declared unfit to fight. Medical specialists have advised that the condition is too severe to allow him to participate in the rematch and that he will require treatment before going back in the ring. Tyson will now immediately undergo the treatment he needs to make a full recovery", Fury's management team, Hennessy Sports said in a statement.

"We and Tyson wish to express our sincerest apologies to all those concerned with the event and all the boxing fans who had been looking forward for the rematch. Tyson is understandably devastated by the development. We will be making a further statement in due course. Until then, we ask that Tyson and his family be given the privacy and space he needs to recover during this difficult time."

The controversial boxer won the last bout between the two on 28 November, 2015 at Dusseldorf, Germany.