David Haye and Dereck Chisora will meet in the ring after the Luxembourg Boxing Federation sanctioned a fight between the two bitter rivals.
The British heavyweights will face each other at Upton Park in east London on 14 July despite neither of them holding a licence.
Promoter Frank Warren confirmed the fight will go ahead on BBC Radio 4
The British Boxing Board of Control [BBBC] secretary, Robert Smith, said: "Neither [fighter] has applied for a licence with the board. We understand that Mr Warren is going to make an announcement on Tuesday and we just by chance have a scheduled board meeting on Wednesday.
"Whatever he says, we will make a statement on Wednesday, if we need to. But any fight they take part in, as we see it today, will not be under the British Boxing Board of Control."
The fight follows a series of bust-ups between the pair and more specifically a press conference brawl following Chisora's title fight with Vitali Klitschko earlier this year.
Haye gave up his licence when he retired from the sport in October last year.
Warren 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?"