Amir Khan wants the best at 147-pounds: I have the biggest balls!

Former two-division world champion Amir Khan may not have the best chin, but he wants everyone to know that he has the biggest balls out of all the 147-pounders.

Khan (32-4, 20 KO's), 31, a 2004 Olympic silver medalist, will return to the ring for the second time in 2018 following a two-year hiatus against Samuel Vargas on Saturday evening in Birmingham.

“I hope he [Vargas] comes looking for the knockout because it makes the fight, they know I have the biggest balls in the division because I love getting caught up in a tear-up," Khan said.

No one can question Khan's heart. He made an unprecedented move in 2016 by challenging dangerous puncher Canelo Alvarez for the WBC middleweight title in a 155-pound catch-weight. The Bolton fighter was outboxing Alvarez before getting knocked out with a brutal right-hand shot that left him out cold on the canvas.

But the 31-year-old Vargas (29-3-2, 14 KO's), a Columbia native based in Canada, doesn't think that Khan, who has been stopped three times in his career, can withstand too much more punishment.

“I don’t care if it is by knockout, distance, or I break his ribs. I will win, I think he’s over the hill, he’s an old man, he’s taken a long of damage. If I touch him, clip him with something, he’s going to get hurt," Vargas said.

Kell Brook and Manny Pacquiao will also be watching closely, but Brook in particular as the former 147-pound titleholder will be ringside as part of the Sky Sports telecast for the fight.

According to Khan's promoter, Eddie Hearn, there is also the possibility of Khan, who is fighting for just the second time in 30 months, facing Terence Crawford or Errol Spence Jr. down the line.

"One thing is, without a doubt, that if Amir Khan wins on Saturday night, he is in a super fight, whether that's Pacquiao, whether that's Brook, whether that's Crawford, whether that's Spence," Hearn told Sky Sports.

"He's ready to go into those fights. He wants that. That's why he returned to the sport. I think he's going to look to answer a lot of questions on Saturday night."