The two fighters will meet on June 22 in the main event of UFC on ABC 6 in Riyadh, Saudi Arabia.
"It's an honor to make history and be a part of the first UFC tournament in Saudi Arabia. It's a milestone for me, I'm looking forward to feeling the energy in this arena. We're going to have a war in the octagon. Hamzat will be ready to show everything he can do.
The fans will get a real spectacle, even though he and I have different approaches to promoting the fight. However, it's always about the fight itself. He respects me and I respect him. We will fight, and the strongest will win. Chimaev is undefeated and is the last test for me in the middleweight division," Whittaker told UFC.