According to Frank Warren, co-promoter of WBC heavyweight champion Tyson Fury, explained that his boxer's frustrations boiled over during the recent press conference to announce the undisputed fight with Oleksandr Usyk.
Fury vs. Usyk will take place on February 17 in Saudi Arabia.
The fight was initially scheduled for December 23, but later pushed back after Fury went through a tougher than expected contest last month with Francis Ngannou in October.
When the two fighters came together for their face to face at the kickoff presser, Fury erupted with a verbal assault on Usyk.
There was a lot of tension in the last few months - with Usyk's promoter, Alexander Krassyuk, often claiming that Fury was trying to avoid the fight.
Warren has always disputed Krassyuk's version of their past negotiations.
"Look the last time we signed for it last year, it was them who pulled out,' Warren said to The Daily Mail. "Tyson's very frustrated. I think that frustration boiled over at the press conference in as much as, this has been a real irritant, everyone saying 'why isn't this going on.'
"We knew what the real truth was behind the scenes, fact is - it's on. Tyson will be there on the 17th, and I'm quite sure Oleksandr will be there too, and I think we're going to get something a little bit special.
"[Fury] believes he's the best and he wants to be the best, and that's it. I suppose that is legacy, in itself, but he's not worried about the label. I think it's the fact that he can walk round and feel himself he's accomplished it [is what's important].
"For me, I think it's brilliant for his kids, that their dad's the undisputed champion, for his family, and I think for me, his promoter for a long time, I'll be as proud as punch that I was with him when he did it. And I hope he does do it. We'll find out on the 17th."