Eddie Hearn, promoter for Anthony Joshua, has serious doubts that Tyson Fury will retire from the sport.

This past Saturday night, Fury retained the WBC heavyweight title when he knocked out Dillian Whyte in the sixth round, before a crowd of 94,000 at Wembley Stadium in London.

After the fight, Fury claimed that he was likely going to retire from the sport.

However, there are many observers who believe he will stick around to take on the winner of the upcoming rematch between Oleksandr Usyk and Joshua, who will battle for the IBF, IBO, WBA, WBO heavyweight titles in late June or July.

Hearn admits Fury, who is still unbeaten, is the best heavyweight fighter in the world.

Fury proved the veteran promoter wrong once again, by knocking Whyte out.

"Tyson Fury is a great bluff merchant, he ain't retiring," Hearn said on The DAZN Boxing Show. "The biggest fights for Tyson Fury haven't happened yet. He's the best heavyweight on the planet right now, I'll give him that. But when we talk about generational greatness? Yes, for this exact generation, but please... with victories over [Deontay] Wilder, [Wladimir] Klitschko and Whyte, don't talk about him in the same breath as [Muhammad] Ali, [Joe] Frazier and Lennox Lewis.

"There is no argument Fury is No 1 [right now]... well actually there could be an argument between Fury and Usyk, but with that resume, don't call him a generational great. He may be the greatest of all time, I don't think so, but he has got to prove it in your resume – not beating one guy [Wilder] three times.

"If he [Fury] beat AJ and Usyk, I'd give him all the respect and be up there, but the jury is out on Deontay Wilder. His best win was Luis Ortiz; we don't know the reality or the truth [of the debate]. I give Fury the credit and respect of knocking people out. I said he wasn't a one-punch knockout artist, I still don't think he is compared to some of the other bigger-hitting guys. He's proving me wrong. I didn't rate him before Klitschko, I thought he had no chance; he won nearly every round. I didn't think he had a chance in Wilder 1, he won that fight, and I didn't think he'd knock Whyte out, and he did. So, respect to the man."