The heavyweight rivals will clash for the second time this year in Saudi Arabia on December 21 and the promoter is ready for a barnstorming sequel after Usyk's epic win in May's original unification world title fight.

Speaking to Sky Sports, Warren said: "We expect an unbelievable fight. It's going to be something special. It [the original contest] was a great fight. For me, it was the best fight of the 21st century at that level.

"Two undefeated fighters, we've finally got a unified champion, and it was a split decision on the judges cards. Some people felt Tyson won, some obviously went with Usyk, and a couple of well-respected people - like Thomas Hauser - thought it was a draw.

"We will find out on December 21, because obviously they've shared the ring together, they've seen strengths and weaknesses as close up as you can possibly be, and we'll see who can exploit what they feel will be those weaknesses."

Some have questioned the wisdom of Fury's father John being in the Gypsy King's corner for the fight but Warren trusts his charge to make the right decision on the issue.

The promoter said: "I've spoken with Tyson about it. Tyson's not a fool, he's a very sensible guy, he knows boxing backwards, knows what has to be done and he'll make sure it happens.

"Of course you don't want lots of voices in your corner, but you've got to understand it was his dad that was in the corner with him. He wanted his dad in the corner, and his dad is concerned about his son, especially when he was hurt in that ninth round. Emotions take over.

"But you know what, a corner can't be emotional. It's got to be cool, calm and collected. And I'm sure that will be the case next time."