Andy Ruiz Jr remains locked in talks over his rematch with Anthony Joshua.
The Mexican-American is steadfastly refusing to travel to Saudi Arabia to defend his heavyweight world titles against the Brit on December 7.
He wants the second installment to be held at the same Madison Square Garden venue in which he dethroned Joshua in June.
Ruiz is believed to have concerns over his safety in the desert state while he believes he is worth more than the reported £7.5million he is due to earn.
Joshua’s promoter Eddie Hearn, however, insists the contract Ruiz signed before the first fight is watertight.
Hearn is adamant the paperwork entitles he and Joshua to dictate the terms of the rematch, but Ruiz is believed to have sought legal advice in a bid to find a loop hole.
And he said on Twitter : “To my fans and supporters I’m looking forward to RuizJoshua2. My team and Eddie Hearn continue talking and working on the details to make this happen.”
Joshua has yet to comment publicly on the rematch, but Hearn said this week: “The contract for the rematch was signed prior to the first fight.
“They are both signed at the same time. There is no other contract.
“We have to let [Ruiz Jr] know the time, date and venue which we have done. That’s it.
“They are contractually bound for the rematch.
“There are no conversations between the two teams about not doing the fight. I don’t perceive a problem.
“He signed a contract with us that he was absolutely over the moon with, that gave him the opportunity of a lifetime. He will 100 per cent honour that contract.
“His choice is to have a legal battle that could put him out of boxing for years, or to defend his belts for a lot of money against a guy he has already beaten. There isn’t any doubt he will take the fight.”