IBF welterweight champion Errol Spence is confident that his former rival, Kell Brook, will beat Amir Khan - if and when the two of them collide in the ring.
The two sides are in serious negotiations to fight each other in early 2019.
Back in May of 2017, Spence broke the orbital bone of Brook and stopped him to capture the IBF belt.
Brook (37-2, 26 KOs) has to come out on top on December 8th, when he faces Michael Zerafa at the Sheffield Arena.
The biggest issue between the boxers is to make them agree on a weight class. Brook is willing to drop down from junior middleweight to 147-pounds, but he's refusing to agree to a rehydration clause on the day of the fight - which Khan is demanding.
Spence favors what he says is the bigger and stronger Brook to beat Khan.
"It would be a huge, huge fight and hopefully they can make it happen. I know they're both still arguing. They both want to be the A-side, no-one to B-side and they're both positioning each other, but I do think it will happen," Spence told Sky Sports' Toe 2 Toe.
"I favour Kell Brook because Kell Brook can punch. Amir Khan has the skills but Kell Brook can punch and has skills too. And he is the naturally bigger fighter."
Brook has been vocal about his desire to secure a rematch with Spence.
And Spence is open to the idea of a rematch - if Brook is able to capture a world title at the junior middleweight. Outside of Brook being a world champion, Spence sees little reason to face him again.
"If he wins a belt, I'll fight him at 154lbs," said Spence.
"I told him if he gets a belt there I'll fight him, but I'm not going to go and fight him for no reason, because I already beat him."