Sources -- Canelo Alvarez close to 2-fight deal with Matchroom Boxing to face Dmitry Bivol, Gennadiy Golovkin

Canelo Alvarez and Gennadiy Golovkin, at long last, are on the verge of a trilogy fight.

Canelo and Eddie Hearn's Matchroom Boxing are closing in on a two-fight deal worth upward of $85 million for boxing's top star to compete on DAZN, sources told ESPN. The first fight of the deal would pit Alvarez against light-heavyweight titleholder Dmitry Bivol on May 7 in a return to 175 pounds, sources said.

Provided Canelo wins, as expected, he would defend his undisputed 168-pound championship against GGG in a long-awaited grudge match on Sept. 17, per sources.

Golovkin (41-1-1, 36 KOs) will first meet Ryota Murata in a rescheduled 160-pound title unification in the spring in Tokyo, and like Canelo, will have to emerge victorious to keep the third fight intact.

The deal has not been agreed to nor signed yet, sources said, but negotiations are approaching the finish line.

For weeks, Alvarez (57-1-2, 39 KOs) has mulled this two-fight offer from Hearn alongside a one-fight offer from Al Haymon's PBC to defend his four super middleweight belts against Jermall Charlo on May 7. The PBC offer is worth upward of $45 million guaranteed, sources said.

ESPN's No. 1 pound-for-pound boxer signed a one-fight deal with PBC last year ahead of an 11th-round TKO of Caleb Plant on Showtime PPV. Alvarez earned $40 million guaranteed for that win. His three previous bouts were promoted by Hearn, including title victories over Callum Smith and Billy Joe Saunders.

The 31-year-old signed an 11-fight, $365 million deal with DAZN in 2018 shortly after he defeated GGG in a September rematch that headlined HBO PPV.

But after just three fights, Alvarez sued his longtime promoter, Oscar De La Hoya's Golden Boy Promotions, and DAZN. The suit was settled and