Chisora is searching for an opponent for his 50th and final professional fight and he has been heavily linked with Wilder in recent days.

It has been suggested Wilder could take a fight with Chisora before tackling Oleksandr Usyk later in the year but Charles believes that would be a very dangerous move for the former WBC heavyweight champion.

Asked if Wilder should view Chisora as a warm up fight, Charles told Sky Sports: "I wouldn't consider Derek, irrespective of where he is in his career, I wouldn't choose him as a comeback fight or a warm-up fight.

"Wilder, especially in his last few fights, certainly shouldn't choose Derek Chisora. Nevertheless, if it's real, let it be."

Usyk has expressed his wish to face Wilder in the US but Charles suggested that Chisora could derail those plans.

"It's a fan friendly fight because of their styles," said Charles.

“You've got a renowned puncher [Wilder], questioning what he's got left.

"If you ask my opinion, a puncher will always be a puncher. Depending on who Wilder has in front of him, stylistically, would they give him that room to detonate that bomb?

"I believe if he fights Chisora, Chisora will not be on the outside to get tagged with that.

"Wilder is going to have a big problem."

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