Eddie Hearn, promoter for super middleweight champions Callum Smith and Billy Joe Saunders, expects Saul "Canelo" Alvarez to decide his next opponent on Tuesday.
Both Smith and Saunders have been presented with offers to face Canelo on May 2, as part of Cinco De Mayo weekend.
But, Smith and Saunders were not satisfied with the monetary amounts for the bout.
Canelo created a high pay line - after his two most recent opponents, Daniel Jacobs and Sergey Kovalev, were both given big purses. Jacobs reportedly received $12 million, with Kovalev receiving the same.
It appears, based on Hearn's statements, that his boxers were only offered half of that $12 million sum.
Hearn does expect a deal to get done, for one of his boxers, by the end of this week. And the contest would likely take place in Las Vegas.
"I believe there's meetings taking place on Tuesday to ultimately determine who is going to get the fight," Hearn told Sky Sports News.
"Billy Joe is coming out and saying: 'Hurry up, tell him he's got until Wednesday'. I said 'Billy, it don't work like that. Ultimately this is the golden ticket, this fight. Callum Smith is waiting patiently behind closed doors. They both want the fight. They both want a deal that's fair. You saw Oscar De La Hoya come out and say: 'These guys turning down these fights.'
"You can't offer a WBA and a 'Ring Magazine' champion half of what another world champion got to face him. We're negotiating. I'm very confident that one of those guys will get the Canelo fight and it will be done this week."