Wladimir Klitschko has labelled July's scheduled fight between London duo David Haye and Dereck Chisora a "freak show".
It was announced yesterday that the pair would settle their differences at Upton Park on July 14.
The fight has been licensed by a Luxembourg governing body because Chisora had his British licence revoked for his actions in a post-fight press conference earlier this year.
"It is a freak show under freak rules," said the WBA, IBF, WBO and IBO heavyweight champion. "It is a spit in the face of the British Boxing Board of Control.
"To get a licence for [Chisora] is disgraceful for the sport.
"How can you have such an event featuring a man who has shown his behaviour to the world, especially considering what he did at the press conference, where he threatened Haye? It's something that isn't good for the fans and the sport."
Queens Park Rangers footballer Joey Barton also ridiculed July's bout.
