CARL Froch has until February 25 to defend his IBF super-middleweight world title against No.1 contender Adonis Stevenson.
But Froch, who fights Yusaf Mack in Nottingham on November 17, is already committed to a re-match with Lucian Bute in Canada.
Froch has a re-match planned with Mikkel Kessler and also fancies another crack at SuperSix champion Andre Ward.
If Froch doesn't fight Stevenson he could, theoretically, be stripped of his title by the IBF.
Alternatively, Stevenson might be persuaded to step aside with the promise of fighting the winner of Froch v Bute.
Just under 7,000 tickets have already been snapped up for Froch v Mack.
The Betfair 'True Brit' undercard features Sheffield-based Nottingham boxers, Tyan Booth and Leigh Wood and Lancashire prospect Scotty Cardle.
The chief support sees Tony Bellew, who spars with Froch, take on Roberto Feliciano Bolonti for the vacant WBC Silver light-heavyweight title.
Four more boxers, Kris Carslaw, Terry Carruthers, Larry Ekundayo and Ryan Toms have been added to the Betfair Prizefighter light-middleweights III line-up, at the York Hall, on November 3.
Promoter Eddie Hearn has added a new knockout bonus, with £2,000 handed out for every stoppage in the event. There is £32,000 to the winner.
"I think it will make things very interesting," said Hearn.
"The last Prizefighter was a cracker, but we didn't have one stoppage or KO.
"It's what the fans want to see and with this incentive, I believe the fighters will be more inclined to get their opponent out of there before the final bell."
The quartet join Craig McEwan, Peter Vaughan, Nav Mansouri and Nottingham's Curtis Valentine in the knockout competition.
