Former heavyweight world champions Anthony Joshua and Deontay Wilder will fight separate opponents on the same night as part of a stacked card on 23 December in Riyadh, Saudi Arabia.
Briton Joshua will face Otto Wallin, with American Wilder taking on former champion Joseph Parker.
If Joshua and Wilder both win, they could fight each other in 2024.
On the undercard, WBA light-heavyweight champion Dmitry Bivol defends his title against Manchester’s Lyndon Arthur.
Londoner Ellis Zorro will challenge WBC cruiserweight champion Jai Opetaia, while British heavyweight Daniel Dubois will face American Jarrell Miller.
Tyson Fury v Oleksandr Usyk was set to headline the event, but Fury’s difficult encounter with Francis Ngannou last month derailed those plans.