Dereck Chisora is targeting another date with the Klitschkos as he prepares for a possible European title fight in September.

The heavyweight has been added to the undercard of Billy-Joe Saunders' British middleweight title defence against John Ryder in the Olympic Park on September 21.

The Londoner was defeated by WBC champ Vitali Klitschko in February last year in a bout surrounded by controversy, as Chisora slapped his opponent at the weigh-in and spat water in Wladimir Klitschko's face in the ring.

Chisora recently bumped into triple world champ Wladimir on holiday and, although reports of a physical altercation were wide of the mark, he made his intentions clear.

"I can't say much about it," he said. "But those brothers won't have a quiet holiday if I have anything to do with it. It was good fun, I can't complain!

"I've changed certain things in my life and I'm going to change more stuff. You don't change, you grow up and mature.

"The best fight for the Klitschkos is me. Me against Wladimir, the whole world would be blasting for that fight. I want both of them, I don't care which one. I'd go to Germany now to box them."

Chisora will be joined on September's Copper Box bill by British welterweight champion Frankie Gavin, while Liam Walsh and Joe Murray will meet for the former's Commonwealth super-featherweight belt.