Chisora and Haye have charity side bet

Heavyweights David Haye and Dereck Chisora have agreed to have a bet on the outcome of Saturday night's grudge match, with the loser paying £20,000 to charity if he is knocked out.

It was the only thing they agreed on at today's heated press conference as they goaded each other once more through a metal security fence.

Chisora has selected a children's hospital while Haye opted for a bone marrow charity.

Almost 30,00 fans are expected to pack into West Ham United's Upton Park ground on Saturday night to see one of the most eagerly awaited, yet controversial dust ups in years.

"I can't think of such a fast-selling fight involving so much publicity since we bought Mike Tyson back, over 10 years ago," said Frank Warren, Chisora's manager.

Warren added that the spoils for victory for his man could be another shot at world honours.

"If Dereck comes through on Saturday like I know he can, then the biggest fight here in the UK would be Wladimir Klitschko," he said. "Get this one out of the way and that is the direction we are going in."