REUTERS Anthony Joshua will face Wladimir Klitschko in the biggest fight of his career

Klitschko lost to Tyson Fury last year, breaking an 11-year unbeaten streak, and has not fought since. However, Fury has since vacated the WBA and WBO heavyweight titles after admitting to cocaine use while suffering depression.

10 things you didn't know about Anthony Joshua Fri, December 9, 2016 Click through the gallery for facts you might not have known about Anthony Joshua Play slideshow AFP/Getty Images 1 of 11 Click through the gallery for facts you might not have known about Anthony Joshua

The WBA has agreed to sanction the fight, which was originally slated for December 10 in Manchester before the Ukrainian pulled out with a minor injury. But now Matchroom promoter Eddie Hearn has confirmed that the fight will indeed take place on April 29 next year.

The bout will take place at Wembley Stadium and could break a record for attendance at a boxing match. "There is no doubt this fight must happen," Klitschko said.

PA Anthony Joshua dominated his second defence of the IBF heavyweight title

REUTERS Anthony Joshua and Wladimir Klitschko will unify the IBF and WBA world heavyweight titles