By Miguel Rivera

The negotiations continue to play out for a battle of former four division world champions, as the teams behind Miguel Angel Cotto and Juan Manuel Marquez are trying to their best to reach an agreement on the terms.

A source with direct knowledge of the discussions advised El Vocero that both sides have continued to pursue that fight for the fall.

The biggest issue continues to be the weight. Cotto is reportedly requesting a catch-weight of 150-pounds, which Marquez believes is way too much for him. Marquez would like to have the fight at no higher than the welterweight limit of 147-pounds.

The source told the Puerto Rican paper that Cotto may be budging a little bit and may be willing to come down to 149-pounds. The Puerto Rican star has been out of the ring since last November, when he lost a twelve round unanimous decision to Saul 'Canelo' Alvarez at the Mandalay Bay in Las Vegas.

Marquez also wants a rehydration clause, preventing each fighter from gaining no more than 10 pounds of added weight when the boxers step on the scale on the morning of the fight. Cotto's last few fights took place in the middleweight division, but he often weighed in as a junior middleweight.

For his part, Marquez - 42-years-old - has been out of the ring since May of 2014, when he won a twelve round decision over Mike Alvarado at The Forum in Los Angeles. Marquez is considering the possibility of retirement if he's not able to secure the right fight.

Roc Nation Sports, who promote Cotto, have apparently been looking at October 8 and October 15 as potential dates for the fighter's return. Cotto has a guarantee of $15 million for his next fight, which has made it difficult to get the right opponent pinned down.

"The talks have continued. Nothing has stopped," the source told the paper.

Cotto has a record of 40-5 and 33 knockouts, and Marquez is 56-7-1 and 40KO's.