Anthony Joshua has already agreed in principle to fight Tyson Fury twice in what is set to be a blockbuster in 2021.
Joshua, who currently holds the WBA, IBF, WBO, and IBO titles will defend his IBF and WBA crowns against Kubrat Pulev on December 12.
Joshua’s promoter Eddie Hearn said, “AJ wants to fight Usyk but his focus is on fighting Tyson Fury.
“If that fight can’t be made he will 100 per cent fight Oleksandr Usyk and if Usyk wants to hang around, Joshua will still fight Oleksandr Usyk.
“AJ wants the challenge against these great heavyweights and Usyk is a very, very good heavyweight.
“Usyk’s disadvantage is his size and he’s handicapped in that sense because he’s unbeatable at cruiserweight, the only way he’s going to get beaten is by fighting guys that are too big for him.”