Former two division world champion David Haye, who manages heavyweight Derek Chisora, believes Oleksandr Usyk has underestimated his man.
Usyk and Chisora were scheduled to fight on May 2 in Manchester, but the fight was pushed back due to the ongoing coronavirus pandemic.
The event was rescheduled for July 4, but there is no telling if it will take place as planned.
Usyk has only had one fight in the heavyweight division, after making his debut last October with a TKO win over Chazz Witherspoon.
The Olympic gold medal winner had unified the entire cruiserweight division in 2018.
Recently, Usyk posted a photo to social media - to display that his body has put on the right kind of muscle to develop more of a heavyweight physique.
But Haye is not concerned with Usyk's physical transformation.
“Derek is in a good place,” Haye told Talk Sport. “The fight date he’s been working towards has been postponed and Usyk is in training and we can see from his social media that he is ticking over in the Ukraine.
“He’s ranked in every boxing expert’s top five pound-for-pound fighters, he’s an Olympic champion, he’s never ever lost a boxing match before, he was the undisputed cruiserweight champion – he’s the man, the most skilled smaller heavyweight out there. Derek Chisora has lost nine fights, many people think he’s passed his prime, but believe me he was having a run in training camp like I’ve never seen him before – the sparring, the physical side of things.
“He’s got on his discipline, he’s eating the right food, he’s sleeping the right times, he’s not doing all of the things he did in the past that culminated in him losing those nine fights. “He shouldn’t have lost all of those fights, a lot of the time he wasn’t just in the best physical condition, the right mind-set, but he is now. I think Usyk has miscalculated how good Chisora is, he doesn’t realise how strong he is, he’s like a bull, he’s absolutely rock-solid, and he’s still training now."