Emanuel Navarrete is thisclose to locking in his next opponent…

The 29-year-old Mexican professional boxer, a three-division world champion, and Denys Berinchyk are finalizing a deal for a May 18 fight in San Diego for the vacant WBO lightweight title, per ESPN KnockOut.

The 135-pound title tilt will headline Top Rank Boxing on ESPN.

Navarrete (38-1-1, 31 KOs) will pursue his fourth division title in his lightweight debut. The 29-year-old from Mexico has captured titles at 122, 126 and 130 pounds. He’s ESPN’s No. 1 boxer at 130.

The second defense of the WBO junior lightweight title Navarrete still holds was in November. Navarrete dropped Robson Conceicao twice but settled for a draw.

Now, Navarrete will fight for the title vacated by former undisputed lightweight champion Devin Haney. Oscar Valdez and Liam Wilson, two fighters Navarrete defeated in convincing fashion last year, will vie for the WBO interim junior lightweight title on March 29.

It’s likely the winner of Valdez-Wilson will be elevated to recognized champion if Navarrete wins as expected.

Berinchyk (18-0, 9 KOs) is a 35-year-old from Ukraine who will vie for his first world title. He’s coming off back-to-back wins over Yvan Mendy and Anthony Yigit, his best opposition. However, Berinchyk will still step up several levels against Navarrete.

Welterweight contender Giovani Santillan, a 32-year-old from San Diego, will fight in the ESPN co-feature, sources said. He’s coming off a career-best win, a sixth-round KO of Alexis Rocha in October.