Eddie Hearn, who promotes domestic rivals Kell Brook and Amir Khan, believes a deal will get finalized to match them against each other - and he expects everything to get wrapped up next month.
The deal is contingent upon Brook winning his next fight, without injury. He returns on December 8th at Sheffield Arena, when he takes on Michael Zerafa.
Hearn is looking to stage the fight on a date in early March or late February, at the Manchester Arena or The O2.
At the start of 2018, Khan signed a multi-fight deal with Hearn - with the goal of getting Brook in the ring.
"I believe the fight will happen, and I think it will be done before the end of the year," Hearn told Sky Sports. "I'd like to get it done before Kell's fight with (Michael) Zerafa and we can get them both in the ring. I believe it is Amir Khan's birthday, December 8 as well.
"If we are going to get it done for February or March, we must get it done before the end of the year. It is the biggest fight out there for British boxing, outside (Anthony) Joshua against (Deontay) Wilder, and it's a fight everyone's wanted for years and years and years. It's a brilliant fight and, like I said, it's the first time both guys have sort of accepted 'this is the next fight for me'."
The biggest sticking point is the weight clause. Khan wants a rehydration clause - which would force Brook to take part in a second-day weight check - and he won't be able to weigh more than 10-pounds above the welterweight limit of 147.
"We are still talking, the weight issues, the hydration issues, where's it going to be, when's it going to be," said Hearn. "I think there's a desire from both sides to make this happen next. We are planning for early March, end of February as well, and I think we will go indoors. I think we'll go to Manchester or The O2 (London) - potentially - and it's a massive fight.
"There's still some work to be done, but we are all working together to make it happen and I don't think there's ever been an occasion where that's been the case. Everyone is quite positive. I had a meeting with Amir's team last week, Kell wants it and I obviously spoke with his dad as well, this week. It's just a case of putting the numbers together but I think everybody understands that it must happen next."