Dereck Chisora and Tyson Fury shook hands on a £10,000 bet on the outcome of their highly-anticipated rematch on July 26 during a heated press conference yesterday.
The British and European titles will both be up for grabs at the Phones 4u Arena in Manchester as the pair do battle for the first time since Fury beat Chisora on points in 2011.
After delivering a barrage of personal insults at his opponent, Fury offered the wager to Chisora, who duly accepted.
As the pair rose to shake hands on the bet, tempers boiled over and Fury threw down his jacket, offering to fight Chisora on the stage of the cinema, where the press conference was being held in Kensington.
Chisora's trainer Don Charles then called out Fury and it took four security guards to intervene before order was restored and the conference was brought to an end.
Earlier, Fury said: "For me this is nothing more than a stepping-stone fight. This is Dereck Chisora's final crack at the whip – but for me this is a stepping stone.
"Dereck Chisora is a journeyman, what champions do to journeymen is smash them to bits.
"If I can't smash him to bits then I must be a journeyman too."
Undefeated Fury took Chisora's British and Commonwealth titles when he won at Wembley Arena three years ago, as well as ending his unbeaten record.
The 6ft 9in fighter insists, however, the British and European belts mean nothing to him and promises to hand them back to Chisora even if he wins.
"His European title and his belts – I'm not interested in them, I'm giving them back after I beat him," Fury said.
Offered the chance to respond, Chisora said to his opponent: "I am coming for you in Manchester. I am coming for you.
"Give me your home address and I will take you to the fight myself. Understand this, I am coming for you."