Frank Warren, co-promoter of WBC heavyweight champion Tyson Fury, feels confident that a fight will be made with WBO, WBA, IBF, IBO champion Oleksandr Usyk.
Last Saturday in Saudi Arabia, Usyk retained his titles with a twelve round split decision over Anthony Joshua in their highly anticipated rematch.
After the fight, Usyk called for an undisputed showdown with Fury.
"If I'm not fighting Tyson Fury, I'm not fighting at all," Usyk said.
A few weeks ago, Fury announced his retirement from the sport.
But, in the aftermath of Usyk's win, Fury openly vowed to return to the ring to batter the Ukrainian boxer.
"He and Usyk would be a really good fight," Warren told BBC Radio 5 Live. "It's a fight that I think will be made because both teams would like to see that happen.
"Usyk said after the fight that it's the only fight he's interested in, and it's certainly the same case with Tyson. It's just a matter of where it will generate the most income because it's a unique fight, a historic fight. It's the first time for God knows how long that the four belts are on the line. Both fighters are undefeated. The whole world of boxing will be captivated by this fight."
Joshua suffered his third defeat in his last five fights.
A fight with Fury could still be made "down the line" says Warren.
If the British star can rebuild himself, a fight with Fury could be entertained in the future.
"If AJ manages to get a couple of wins under his belt - and I believe Tyson will beat Usyk - that may be a fight to be made. But AJ's got to re-establish himself before you can even think about fights like that," Warren said.