David Haye will fight Tyson Fury on September 28, report SkySports.
Haye confirmed the arrangement of the all-British heavyweight bout by posting a video of himself signing the contract agreement for the fight on Instagram.
Haye said that Fury may instead be looking to fight Tony Thompson, the man who defeated David Price for the second time last Saturday.
The 32-year-old posted: "I've just signed to fight Fury on Sep 28, let's hope he finally agrees (and signs today) and he doesn't keep delaying.
"Word around camp fire is Fury is looking to duck me and fight Tony 'The Tiger'. Let's hope they are just rumours..."
When speaking to the camera, he said: "I'm happy because I'm about to sign a contract to fight Tyson Fury.
"We've re-jigged the contract so he's nice and happy. Here we go ... (signs contract) ... all done."
The fight will be his first fight since defeating Derek Chisora at Upton Park in July 2012, though he had planned to face Manuel Charr in June, before pulling out through an injury to his hand.
Fury, 25, is currently undefeated, and like Haye, will see the fight as a stepping stone towards fighting Wladimir or Vitali Klitschko in a bid to hold all belts in the heavyweight division.
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