Daniel Dubois wants to face Oleksandr Usyk should Anthony Joshua vacate the WBO title in order to arrange a clash with WBC heavyweight champion Tyson Fury.
The 22-year-old heavyweight moved into No. 3 in the WBO rankings, making him second in line to challenge for the title. That could lead to Usyk and Dubois battling it out should the belt be vacated, as the two next highest-rated fighters.
Joshua may elect to skip any obligation to face Usyk in order to be sure of a big-money event with Fury.
Dubois feels ready to step up to challenge for belts, saying: "I feel already that I can beat all the best heavyweights in the world, Fury, Joshua, Wilder, Usyk, any of them."
Usyk, Joshua and Fury all have their next fights lined up, and Dubois himself must negotiate a bout with Joe Joyce on 24 October to defend his British title.
Joshua must face Kubrat Pulev as his IBF mandatory challenger, with the bout expected to take place in December. That same month, Fury is expected to have a third fight with Deontay Wilder. Usyk will take on Dereck Chisora at the end of October, according to Matchroom promoter Eddie Hearn.