Haye, 32, posted a video of himself last night on Instagram apparently signing a contract for the bout.
He attached this message to it: "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."
Fury's camp have now revealed that they have accepted the fight.