The fighter has been training alongside his sibling ahead of the heavyweight unification bout next month and thinks that the Gypsy King will make light work of his rival as he is in excellent condition for the fight.

Fury told Mirror Fighting: "For me, seeing him in camp and being there watching him spar, it's the best version of him that I've ever seen. I think he's really switched on for it and with Tyson I feel like to get the best out of him he needs people saying, 'I don't know if he's going to win, I think he's probably going to lose.'

"That's what you've got this camp, I truly believe if he turns the way he's looking in the gym then it'll be an easy night's work for him. All will tell but this is history, it's not just a boxing fight. It will go down in the history books and everybody should enjoy it because you never know when you're going to get a fight week like this again."

The two men will put their undefeated records on the line in the fight on May 18 but Fury warned former cruiserweight Usyk that he won't be able to cope against an "elite heavyweight".

The WBC world champion said: "We have weight divisions for a reason. When the cruiserweights step up to the big boys, usually they get found wanting.

"You can beat the average big ones, but you can't beat the elite big ones because size really matters.

"These are facts."