Tyson Fury has offered a cryptic response to David Haye's call for the two heavyweights to meet in the ring.
Haye defeated friend and former sparring partner Joe Fournier on the undercard of Evander Holyfield vs Vitor Belfort on Saturday night.
It was Haye's first fight for more than three years since he retired following his second defeat by Tony Bellew.
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And after he laboured to a points win over rookie Fournier, Haye surprisingly called out Fury whom he had been due to face in 2013.
He said: "I'd only comeback for Tyson Fury. I don't want to show him what I've got, I was able to win this fight without showing 'The Hayemaker'.
"I don't want him to know what I've got left, I want to surprise him on the night. My overhand right... which I didn't even show in there tonight, I didn't want to scare him. If I'd have let my right hand go, he wouldn't be taking the fight."
Fury is currently on a social media blackout as he prepares to fight Deontay Wilder for the third time on October 9.
But his management team caught on to Haye's call-out and issued a response on Fury's Instagram account.
Posting a picture of Fury standing over Haye at a 2013 press conference, he wrote: "There's only one".
Haye and Fury were booked to fight in 2013 and 2014, but Haye pulled out on both occasions citing injuries.
And Haye continued: "[The fight] has been in my mind for a long time. Since 2013 when we were scheduled to fight, the fight didn't happen as I got an injury.
"I've always wanted that fight and I've seen him go from strength to strength he's got better and better. His reputation's up there, he's the lineal heavyweight champion of the world, so many people believe he's number one.
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Fury accused Haye of intentionally avoiding to fight him when their scheduled fights fell through, but it seems over eight years later that Haye wants to put the rivalry to rest.
He continued: "If I'm going to come into the sport of boxing in a real fight against someone special, that is the guy I know I can beat. I know his style and what he does well. My attributes don't work for his style.
"I think him and his team know that. I think maybe they think I'm a little old, so they probably will take the fight. But I'm looking for the biggest fight out there and you don't get much bigger than the 6'9 undefeated Tyson Fury."