Pacquiao 'can't retire with peace of mind' without Mayweather rematch

Manny Pacquiao is still haunted by his loss to Floyd Mayweather Jr. and believes he's closing in on a chance to exorcise those demons.

The eight-division world champion was defeated via unanimous decision in their May 2015 bout, later attributing his poor performance to a right shoulder injury.

"I can't retire with peace of mind because of the defeat," Pacquiao told Martin Domin of Mirror Sport. "If you watch the fight, he didn't throw many punches."

He also expressed confidence that a rematch with Mayweather will happen in the near future.

"I will have a couple more fights left in boxing," Pacquiao said. "First I am fighting (Adrien) Broner and after that there is a big possibility of the Mayweather fight."

Mayweather was scheduled to fight kickboxer Tenshin Nasukawa on Dec. 31, but called off the bout in a lengthy Instagram post Wednesday, stating that he never agreed to it.