Dillian Whyte has told Anthony Joshua "he can have it" next April if his fellow Brit's plan to face Deontay Wilder fails to materialise.
World champions Joshua and Wilder have so far failed to agree terms for a money-spinning unification clash, with the former now scheduled to face Alexander Povetkin instead in his next outing, on September 22, at Wembley Stadium.
The same venue is already booked up for the IBO, IBF, WBA and WBO holder in April 13 2019, potentially for a showdown against the American in possession of the WBC title.
Whyte, however, is willing to step in and face either man should negotiations prove unsuccessful, having raised his own profile by recording a points win over Joseph Parker on Saturday.
When asked who he would ideally like to face next following his triumph over Parker, Whyte replied: "I don't care.
"There's Wilder and Joshua, but to fight one of those two I'm going to have to wait until April.
"We need an intermediate fight, because I'm still learning. There are still things to work on, to get a bit shaper, and also get my weight back down a little bit.
"But if Joshua wants it in April, he can have it."
Whyte has previous with Joshua, who won their meeting in the paid ranks when the British and Commonwealth titles were on the line in December 2015.
Their rivalry stretches back to the amateurs, though, when Whyte toppled the future Olympic champion.
The 30-year-old – nicknamed The Body Snatcher – believes a change in tactics could lead to a different outcome if they are to complete the trilogy, particularly as he claims to know Joshua's weak points.
"The last time I tried to out-box him, because we thought he had stamina issues. Next time, though, we'd have to take the fight to him," Whyte revealed.
"I'd live in his chest, rough him up a bit. I'd look for the punches that can hurt him, because I know which ones he’s vulnerable to."
What a night! #whyteparker
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Promoter Eddie Hearn is confident the two domestic rivals will eventually meet to settle their old score, but is more focused on plotting Whyte's next outing, which is likely to be before the end of the year and, potentially, on American soil.
"That fight is always going to happen. AJ wants it. He [Whyte] wants it. That wouldn't be hard to make," Hearn told the media after Whyte's victory at the O2 Arena in London.
"For now, though, it's about the interim fight. Is it Wilder? Is it a [Dereck] Chisora rematch? Is It Jarrell Miller? Is it just an opportunity to go over to the United States and get some experience over there, in New York or Los Angeles?
"The most important thing is, if the heavyweight championships are tied up, you've got to stay active, be in relative fights and earn money. He's doing all those things."