Fury claims Whyte title showdown is on

Tyson Fury says Dillian Whyte has signed his side of the contract which paves the way for a world heavyweight title contest between the British rivals.

Whyte, a mandatory challenger for the WBC title for several years, had until 6am (4pm AEDT) on Tuesday to put pen to paper after Fury's co-promoter Frank Warren won the purse bids with an offer of $US41 million ($A57m).

The 33-year-old Londoner is entitled to just 20 per cent of the purse and it was rumoured he was seeking a renegotiation to increase his side of the split, but he has now agreed to forge ahead, according to his opponent.

Fury, who claimed the WBC title by stopping Deontay Wilder in February 2020 and made his first defence by knocking out the American last October, has been goading Whyte on social media ever since the purse bids came to light.

"Oh my God. Dillian Whyte's signed his contract for 8 million dollars. What a surprise!," the 33-year-old WBC champion posted on Instagram on Tuesday morning.

"An absolute idiot. Should this even be a talking point? The man signed, for the biggest pay-day he's ever going to get in his life."

Fury suspects the reason for Whyte's delay may have been a mental ploy to delay the self-styled Gypsy King's training camp ahead of a blockbuster bout that has been reported to be pencilled in for April 23 at Wembley.

"Oh my God, my head hurts from all the mind-games that Dillian Whyte's been playing on me. Oh my God. I'm so sore. I don't know whether I'm coming or going. My training camp's a mess," Fury added.

Fury, who has not fought on UK soil since outpointing Francesco Pianeta at Windsor Park in Belfast in August 2018, had another message for his foe as he trained alongside Joseph Parker, narrowly beaten by Whyte in July