Bantamweight titleholders Tomoki Kameda of Japan and England’s Jamie McDonnell, who have had a deal in place to fight since late last year as long as they both successfully retained their titles in interim bouts (which they did), will meet on the Omar Figueroa-Ricky Burns undercard on May 9 (CBS), according to Matchroom Boxing promoter Eddie Hearn, McDonnell’s promoter. However, the fight, part of an Al Haymon “Premier Boxing Champions” card, likely is not going to be to unify their 118-pound belts as originally planned.

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Kameda (31-0, 19 KOs) holds the WBO version of the title and McDonnell (25-2-1, 12 KOs) holds the “regular” version of the WBA belt, and the WBO understandably said it will not sanction a unification bout with a secondary titlist when the true WBA titleholder is Juan Carlos Payano.

However, Hearn told ESPN.com that the fight will go on regardless of whether it’s to unify titles or not. Most likely it will be McDonnell who will defend his belt.

“Great fight whichever way it’s done,” Hearn said.

The card’s location is not set yet. It could take place in San Antonio, which was where Hearn thought it was supposed to be, but it could also wind up in Hidalgo, Texas.

The card likely will also include another bout that is close to being finalized: former junior middleweight titlist Austin Trout (28-2, 15 KOs) against Australia’s Anthony Mundine (47-6, 27 KOs), a former super middleweight titlist who later dropped down to junior middleweight.

Trout has won two fights in a row since back-to-back losses to Erislandy Lara and Canelo Alvarez in a title unification bout. Mundine lost a decision to former welterweight titlist Joshua Clottey in April but rebounded for a disputed split decision win against Sergey Rabchenko in November.