Contracts have not been signed, but the bout is close to being finalized for a UFC 275 pay-per-view on June 11. A location for the card has yet to be announced, but it's expected to take place in Singapore.
Whittaker (23-6), of Australia, is coming off a decision loss to Israel Adesanya at UFC 271 in February. The former champ felt he did enough to win the five-round fight, and has made it clear he intends to pursue a third fight against Adesanya. He has lost to Adesanya twice in title fights.
Vettori (18-5-1), who trains out of California, is coming off a five-round decision over Paulo Costa in a bout that was held at 205 pounds, when Costa couldn't make the 185-pound weight limit.