Mundine, 42, believes he is capable of toppling the 29-year-old Brisbane boy, and Horn's trainer Glenn Rushton says it is a possibility.

“Mundine is not the fight that’s hot on the radar, but you’ve got to keep the doors open,” Rushton told AAP.

“There are more suitable opponents, but we are not saying no to anything, because Jeff needs to stay active.”

Mundine remains the biggest pay-per-view drawcard in Australia with a sizeable purse likely if the fight went ahead.  

“Some would love to see him lose, others would hate it,” Rushton said of a fight against Mundine.

“He (Mundine) has still got plenty of support, but I’m not sure we’re seriously considering it.”

Rushton said current world champions Miguel Cotto and Terence Crawford were unavailable.

“With those guys no chance of fighting this year, like I said we are searching from the top down, and Lamont or Jessie both having held belts are both in our sights,” he said.

“We’ll let (Horn’s promoter) Dean Lonergan talk to them and try to sort something out quickly.

“I want something locked in this week if we can.”