Chechen-born Khamzat Chimaev faces Robert Whittaker in a middleweight title eliminator bout in Saudi Arabia on 22 June.
The middleweights will headline the UFC’s first fight night in the Kingdom.
Chimaev, 29, is undefeated in 13 fights, but faces his toughest challenge yet against Australian former champion Whittaker.
The winner will face reigning champion and South Africa’s Dricus du Plessis later this year.
Also on the undercard is an all-Russian heavyweight contest between Alexander Volkov and Sergei Pavlovich.
The UFC were due to hold their fight event in Saudi Arabia in March.