Former UFC champion Tyron Woodley had to sign a non-disclosure agreement stating that he was not allowed to knockout Jake Paul in their August fight.
This is according to Conor McGregor's teammate and recent Paul rival, Dillon Danis.
Paul, who fights Tommy Fury in December, defeated Woodley in August on a point's decision when the two met in Cleveland, Ohio.
Woodley landed the most significant blow of the fight in the fourth round, but outraged fans when he didn't follow up as Paul was sent flying into the ropes.
Danis has claimed that part of Woodley's fight clause stated that he was not allowed to knockout Paul in the fight.
Speaking on the MMA Hour to Ariel Helwani, Danis said: "Tyron Woodley, from what I heard, had it in the contract that he was not allowed to knock out Jake Paul.
"I swear on anything, when he was against the ropes, I swear, that’s why when Jake Paul was against the ropes, Tyron Woodley didn’t hit him.
"I’m telling you right now. It was in his contract where it said you’re not allowed to knock him out."
Paul had initially agreed to a rematch with Woodley after the fight, but has since ditched those plans and will now fight Manchester-born Fury next month.
The fight will be Paul's third of 2021, having knocked out Woodley's longtime teammate Ben Askren in April.
Fury fought on the undercard of Paul vs Woodley, outpointing Paul's sparring partner Anthony Taylor in a lacklustre display.