Tyson Fury has been urged to show he is "brave enough" to take on Oleksandr Usyk in a fight that could end all arguments over who is the greatest heavyweight of their generation.

For now, Fury's focus is on putting his WBC belt on the line against Derek Chisora on Saturday at Tottenham Hotspur Stadium.

However, Usyk is eager to tackle the Briton and that fight could happen in the new year, if all parties can come to an agreement.

According to the 35-year-old Ukrainian's agent, Usyk would jump at the opportunity. Usyk, himself, has expressed similar sentiment, and Fury's next step after the Chisora fight, should he win that one, will be keenly watched.

Fury has described the prospect of facing Usyk in 2023 as "unlikely", suggesting he could instead undertake a world tour of one fight per month, in what he has labelled a "bum-a-month campaign".

Yet Fury's words and his actions do not always match up, so the right proposal might still tempt him to fight Usyk, who holds the WBA, IBF and WBO titles.

Indeed, Fury's co-promoter Bob Arum this week suggested an agreement for a showdown against Usyk could be made "speedily".

Usyk's promoter Alex Krassyuk told Sky Sports: "Usyk, he's the kind of person who went through some big challenges in his life. He's not afraid of anything. He's seeking challenges himself.

"He has become the undisputed at cruiserweight. Before that he became Olympic champion, that was the challenge for him. Before that he became world champion in the amateurs, European champion, so he was overcoming step by step.

"Now he is one step to becoming the undisputed in the heavyweight division. So he can't miss this chance. He's not ducking anyone. Once you know in detail his biography you would hardly believe he could duck anything in his life."

A fight between Fury and Usyk could be a defining contest in the career of both men.

Krassyuk added: "We all hope [Fury] is brave enough to take this challenge, to accept the challenge of fighting a small 'middleweight' rabbit from Ukraine who's going to take his green belt away."