Kalle Sauerland believes there is still a chance that Tyson Fury will face off with Oleksandr Usyk before the year is out.
Fury is the WBC heavyweight champion while Ukrainian Usyk is the unified WBA, WBO and IBF belt holder.
The pair had been discussing the chances of an undisputed clash for April 29 but with no resolution in sight it appears talks have collapsed, for now at least.
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Matchroom head Eddie Hearn also suggested he believes the fight could still be made, and fellow promoter Sauerland had a similar opinion.
"I've just got this feeling that it might still get done but okay, it appears no. But they seem to be arguing over a very, very small point in the contract if it's just the split on the rematch," Sauerland told Sky Sports.
"Maybe they still get it done.
"It's unfortunate but I still think we'll see that fight one day."
He continued: "The 70/30 [purse split in Fury's favour], I get it. The way old school fights got made was: 'You're from the UK, you keep the UK TV. You're from Ukraine, you keep Ukrainian TV. The rest of it we'll split and we'll split the gate.' If I figure it out like that, it ends up at 70/30. That's not changed over the years.
"They accepted 70/30 [for a first fight] so it's not a knock on Team Usyk, they're great guys.
"The sport lives off the big fights being made. Generally they get made.
"It's not a good look. At the same time boxing does deliver those big fights. Half the drama in boxing is them not getting made, then getting made.
"That's part of the build up. It's nothing new… Generally they do get made. I still think if it doesn't get made now, it will get made later this year.
"Also, I'll put my big mouth on here again, I think Fury against [Anthony] Joshua gets made before they retire."