David Haye looks set to delay his retirement plans in order to face WBC heavyweight champion Vitali Klitschko.
Haye has been keeping a low profile since losing his WBA crown to the Ukrainian's younger brother Wladimir in a lacklustre points defeat in July.
The Londoner was ridiculed by many after he failed to live up to his pre-fight boasts and blamed his poor performance on a broken little toe sustained in training.
However, the former cruiserweight king now appears keen to box on beyond his 31st birthday after Vitali threw down the gauntlet following his 10 round win over Tomasz Adamek at the weekend.
"I'll knock him out, I'll smash his jaw," Haye told German daily Die Welt. "Vitali, I'll fight you, if you are man enough.
"It doesn't matter to me where I fight you, I'll fight you on the moon," added Haye in response to Vitali's desire to fight at Wembley Stadium.
"He has my contact details, I'm waiting for him. No fight at heavyweight would generate more publicity than Haye against the old Klitschko.
"I am the most popular heavyweight on the planet and with me he will earn the most money."
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