The planned fall rematch between Canelo Alvarez and Gennady Golovkin is now looking less likely to take place.

The two boxers were scheduled to meet on May 5th, but the fight fell out after Canelo was suspended over a pair of drug tests that came up positive for the banned substance clenbuterol.

Canelo will be cleared to fight by August 17th, and his next fight is scheduled for September 15th as part of Mexican Independence Day weekend.

Golovkin still went forward with his HBO date on May 5th, and retained his IBF, IBO, WBA, WBC middleweight titles by knocking out late replacement Vanes Martirosyan in two rounds at the StubHub Center in Carson, California.

Canelo and Golovkin fought to controversial twelve round split draw last September at the T-Mobile Arena in Las Vegas.

The two sides have been negotiating the terms of the rematch for this coming September - but Golden Boy Promotions CEO Oscar De La Hoya, who promotes Canelo, is claiming that he was advised that Golovkin rejected the rematch.

“It’s clear to us that Golovkin doesn’t want to fight Canelo,” De La Hoya said to Mike Coppinger of The Ring.

“It’s clear to us that after all the demands that they made, after Canelo having to do the hair follicle test, having to enroll in VADA, having to be tested by the Nevada State Athletic Commission randomly even before he was enrolled in VADA, it’s clear that GGG is afraid.

“So we’re going to move on and I’m going to start making phone calls to (Daniel Jacobs’) people, to (Billy Joe) Saunders’ people, start making calls to (Jermall) Charlo and (Spike) O’Sullivan. (Golovkin's promoter Tom Loeffler told me GGG) doesn’t want to fight. That’s all Tom said. They’re not going have a better deal than what they have now.”

Tom Loeffler denied De La Hoya's version of the story when contacted by Coppinger.

According to Loeffler, he requested a better deal for his boxer - which De La Hoya rejected.

“If they want to go in a different direction, they’re entitled to, but I think that speaks more to Canelo,” Loeffler said.

“GGG is not afraid to fight anybody in the middleweight division. He made a lot of (financial) sacrifices for the first fight and the rematch. And since the rematch was cancelled he wants a more equitable percentage."