David Haye and Dereck Chisora will fight one another on 14 July at West Ham United's Upton Park.
The fight, sanctioned by the Luxembourg Boxing Federation, will see the London duo go head-to-head in the ring after they came to blows outside the ring in Munich in February.
The British Boxing Board of Control will not sanction the fight because neither holds a British licence, but promoter Frank Warren will confirm the event at a 12:30 press conference.
Following his defeat by Vitali Klitschko over two months ago, Chisora, 28, was confronted by Haye at his post-fight press conference, which led to a brawl between the pair. Haye's trainer, Adam Booth, had his head was cut during the melee which ensued.
And after the fracas with Haye, Chisora was filmed saying he would shoot Haye and telling Booth he would face Haye in the ring or hunt him down.
Chisora had his licence withdrawn following his behaviour revolving around his fight with Klitschko.
He slapped the Ukrainian at the pre-fight weigh-in and whilst walking to the ring for the bout spat water at Vitali's brother Wladimir.
Zimbabwe-born Chisora has appealed the withdrawal of his license however.
Haye, 31, meanwhile relinquished his licence when he retired in October last year, three months after his WBA title defeat to Wladimir in Hamburg.
Warren himself has done a U-turn after he initially said he would not go ahead with a fight between the duo.
He said: said: "What he [Chisora] did was stupid and there should be some sort of punishment.
"But he will be out of action for six months and will lose money. Why should he not make a living?"