The Gypsy King looked a shell of his former self in his clash with former UFC star Ngannou
Fury, 35, was dropped by the former UFC heavyweight champion in the third round of their Riyadh Rumble, in which he looked devoid of ideas.
The Morecambe warrior will look to become the undisputed king of the heavyweights against Oleksandr Usyk in February following his horror show against Ngannou.
And Hearn reckons Fury will enter the unification fight somewhat of a shell of the fighter he was when he was his peak.
He told Boxing Social: “I think Tyson Fury, Look, there are a lot of signs that he might be in decline after the Ngannou fight.
That being said, Hearn believes Fury will be too much for former undisputed cruiserweight king Usyk too handle if he takes the fight seriously.
He continued: “But if he is back to his best, if he is firing on all cylinders, I do expect him to win that fight.”
Hearn’s latest prediction for the fight is in stark contrast to initial assessment of the dust-up.
He said: “Usyk is a special breed, we’ve [Anthony Joshua] had two cracks at him.
“Usyk-Fury is a mismatch, no one wants to see it.”
Hearn’s concerns about Fury’s recent displays are also shared by the WBC heavyweight king’s dad John.
He said: “The 17th February is the date they have got to work towards.
“But in my opinion, Tyson needs a bit more time to get his conditioning right and his weight right.
“For me, it looked like he had lost 20lbs of muscle last time. Something was wrong.
“For my money, his last three fights, I have seen a bit of decline. Not a decline in ability but a decline in strength, power and physical condition.
“I don’t know what they are doing up there, you have to address it. He didn’t look himself out in Saudi.
“He didn’t look right, everything had changed about him, his demeanour, his body. I was puzzled.
“He said he had been training but there is training and there is training.
“If you’re going at your own pace no one is going to tell you otherwise, no one is going to offend you or kick you up the backside.
“No one can teach Tyson how to box, or teach him more than he knows. All they can do is put some muscle on there and make his body rock solid.
“For my money he looked fat-thin, he should have been better, a bit heavier with a lot more muscle.
“Tyson is a mammoth fella. He needs to power up in the body department and the only way you do that is a proper course and they take time and we don’t have the time.”
