Anthony Joshua is giving Tyson Fury a real chance of beating Wladimir Klitschko.
The Olympic gold medallist, who has trained in the Klitschko camp, admits the current WBO, IBF, IBO and WBA heavyweight champion is the favourite, but not by much.
Fury went on the verbal offensive in the press conference in Dusseldorf on Tuesday and while he does not believe that will play a part, Joshua is adamant that the challenger could spring a surprise.
If you've got Fury's style in charge, you've got a class fight and someone's going to get knocked out early.
"I give Fury a 40 percent chance," he told Sky Sports.
"He's young, he's got nothing to lose which is important emotionally. He is a big man so the distance of range is equal, so I give him a chance.
"I don't give him a 50-50 chance because Klitschko has been reigning supreme for the last 10 years and he's got that experience that Fury hasn't."
Joshua, who will fight Gary Cornish for the Commonwealth title in September, says it will be down to which fighter's style controls the fight.
If Klitschko dominates, he is expecting it to go the full 12 rounds but if Fury's "irrational and emotional" style dictates Joshua believes the Manchester traveller could produce an early knockout.