Lamont Peterson's fight against Lucas Matthysse will be held at a catchweight of 141lbs with neither of the pair's titles on the line.
In a curious move by Golden By Promotions, the duo will clash in a 12-round welterweight contest on May 18 after which, win or lose, they will remain champions.
Peterson will continue to hold the IBF strap he won against Amir Khan in 2011, despite subsequently failed a doping test, and Matthysse will still be the 'interim' WBC champ.
It means that either could still face current WBC and WBA champion and Golden Boy stablemate Danny Garcia, should the Philadelphian get past veteran Zab Judah next month.
It is thought the last man standing from those three fights will then take on former IBF and WBA champion Amir Khan with all three belts on the line.
The nonetheless mouth-watering Peterson-Matthysse fight in Atlantic City is part of a double-header that sees Britain's Kell Brook challenge Devon Alexander for the IBF welterweight title.