Tyson Fury could confirm his credentials as Anthony Joshua's most dangerous challenger if he beats Deontay Wilder, according to Glenn McCrory.
Fury will take on Wilder on December 1 for the WBC heavyweight world title as he looks to return to the pinnacle of the sport more than three years after beating Wladimir Klitschko in Germany to claim the world title.
The self-styled 'Gypsy King' has since battled depression, drug abuse and more than eight stone of weight gain, but has already recorded two wins this year - albeit against token opposition.
He plans to beat Wilder before taking on Joshua and former cruiserweight champion McCrory, who sparred the likes of Mike Tyson in his career, believes Fury could be a very serious contender once again.
"I'd have to reserve my opinion on Joshua vs Fury until after the Wilder fight," McCrory told The Brian Moore Show.
"We need to see how Tyson Fury deals with that challenge if he deals with it at all. That will answer a lot of questions.
"I think Tyson Fury has the makings of being back at the top of world boxing. He's the toughest to beat.
"If I was picking an opponent of the three, he's the one I'd least like to have because of his size, how difficult he is to box and how tricky he is.
"But Anthony Joshua is another person altogether. He's immensely talented.
"The great thing is that they are both undefeated. But if Fury does get past [Wilder], he will beat Anthony Joshua."
McCrory will this weekend take on a very different type of battle as he attempts to climb Mount Kilimanjaro along with Geraint Williams, a boxing fan with Friedreich's Ataxia.
McCrory's brother David suffered from the same disease throughout his life and eventually died at the age of 29.
The former boxing champion is now raising money for Ataxia UK https://www.justgiving.com/fundraising/glenn-mccrory with an aim of raising £10,000 for the charity by climbing Africa's highest mountain.
But McCrory also still has a keen interest in boxing and will see his old IBF belt, along with the rest of the cruiserweight straps, on the line when Tony Bellew takes on Oleksandr Usyk on November 10.
And while the Ukrainian is the champion and the favourite, Bellew's countryman will not rule him out of springing an upset.
"Usyk is very very talented. He's an excellent boxer, great movement, great footwork but if he was offered to me, I would have jumped at the fight as well," McCrory added.
"I think Tony Bellew is doing the right thing and he definitely has a chance.
"He's a powerful puncher, he's full of confidence at the minute and he's got bags of experience so I think that is a fight he should take and I would certainly not rule Bellew out at all of coming away with all the belts."
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