Daniel Dubois and Filip Hrgovic will compete in the ring on June 1.
The two heavyweights are part of the Queensberry vs. Matchroom event.
Both fighters are back in Saudi Arabia. For Dubois, his last time out was a December victory over Jarrell Miller, while Hrgovic was also on the card as he defeated Mark de Mori in the first round.
There's also a likely IBF world title shot going to the winner.
Here's everything you need to know ahead of Dubois vs. Hrgovic.
This fight will take place on Saturday, June 1 in Riyadh, Saudi Arabia. It will be held at the Kingdom Arena. but the event begins at 7 p.m. UK / 2 p.m. ET.
Hrgovic has revealed he will retire should he lose to Dubois.
He said: “Of course [I would retire if I lose]. How can I live with that? I think I'm the best.
“I worked hard 18 years in this sport like a f****** maniac. So if I lose to Dubois, f*** that s*** man - obviously I'm not as good as I think I am. So I will retire."
If he does win, the Croatian is eyeing a huge bout against Anthony Joshua next.
"It should be me against Dubois for the vacant IBF belt,” Hrgovic said. “Then the winner should fight Joshua, but you never know in boxing.
"Joshua is the dream fight and I hope I will beat Dubois and then fight him in Wembley in September.
"That would be perfect."
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