WBA heavyweight champion David Haye says that Wladimir Klitschko has been passed fit for their unification bout later this year.

The Londoner is set to face IBF and WBO holder Klitschko on June 25 or July 2, but there was a doubt over whether the Ukrainian's brother Vitali would step in as Wladimir was suffering with a stomach injury that saw him pull out of a bout with Dereck Chisora.

But Haye told BBC Five Live: "I should know the date in the next couple of weeks, I know it's Wladimir I am fighting, he is fit to fight and ready to go."

Haye also revealed the fight is likely to take place in Germany, stadiums in Dortmund, Gelsenkirchen and Kaiserslautern have been considered, but that he does not care where the bout takes place.

"It doesn't bother me," he said. "I haven't been pressing them for a venue, as long as I know I am fighting at the end of June or start of July I am happy.

"I have heard people talking about crazy places all over the world, but I'm anticipating the fight to be in Germany."