Wednesday 9 December 2015 14:55, UK
Deontay Wilder still wants to face Tyson Fury, even if he loses his rematch with Wladimir Klitschko next year.
The American holds the WBC title and has called for a heavyweight unification clash with Fury, who ripped the WBA, IBF and WBO belts from Wladimir Klitschko with a points win in Dusseldorf last month.
Klitschko has enforced an immediate rematch which is expected to go ahead, despite a threat from the IBF to strip away Fury's title unless the new champion fights his mandatory challenger first.
But Wilder is prepared to wait a little longer for his meeting with Fury as the pair have stoked up their rivalry on social media for years and he insists the fight can go ahead - even if the Brit loses his second battle with Klitschko.
He told Sky Sports News HQ: "I still want to fight Tyson Fury. Me and Fury, we have been advertising our fight for four years now, so this fight is already sold out, whether he is the champion, whether I am the champion or not.
"That fight must take place sometime in history, sometime in the future, so whether he loses or wins that fight - it must happen."
Lennox Lewis was the last man to be considered as the true unified champion after he won his rematch with Evander Holyfield on points in 1999.
Wilder admits his pursuit of all the remaining titles might be a lengthy task, but the unbeaten Alabama man is confident he will eventually be recognised as the single ruling champion.
"Every heavyweight champion wants that crown. Every heavyweight wants to be labelled at the best heavyweight in the world," said Wilder.
"I know it takes a lot of time, it takes a lot of fights to build it up - the right fights to be there, but I definitely want it bad. I want to do anything that it takes to get that crown, the best heavyweight champion of the world.
"I feel whoever becomes the undisputed heavyweight champion of the world gains that. There hasn't be an undisputed champion since 1999 and that was Lennox Lewis, so it's been well over a decade.
"But especially to be an American, to do that. I tell you right now, you're talking to the guy who is going to do that and I promise you that.
"No matter how many times those belts have been exchanged in hand, I will be the undisputed heavyweight champion of the world, so you can write my name down for that in history."
Joshua vs Whyte is exclusively live on Sky Sports Box Office on December 12, and is now available to order via phone or online.