Former WBO welterweight champion Jeff Horn (18-1-1, 12 KOs) has been warned to recognize the real danger in a potential fight with Anthony Mundine, who captured titles in several weight classes.

Mundine (48-8, 28 KOs), although 43-years-old and past his best days, is still viewed as a dangerous opponent.

Earlier this month, Horn suffered his first career defeat when he was dominated and stopped by Terence Crawford at the MGM Grand in Las Vegas.

Mundine is the much bigger man, having won a world title as high as super middleweight and he is only one fight removed from competing at 175-pounds in a close points loss to Danny Green.

Former champion and veteran trainer Jeff Fenech believes Mundine will be a real threat in that contest.

“That performance was a long way short of Jeff Horn’s best and Anthony’s confidence will be high after watching it. Anthony is still very fast and if Jeff isn’t 100 percent ready for a tough fight he could really be in trouble," Fenech said to Courier Mail.

“You have to remember that Anthony is physically a lot bigger. He’s beaten big, strong guys like Danny Green and would have a pretty big size advantage over Horn even if they weigh about the same on fight night.’’

Legendary Australian trainer Johnny Lewis, who trained six world champions like Fenech and Kostya Tszyu, gives Mundine a real shot to win that fight.

“When Anthony’s confidence is up he is a very dangerous guy; very fast and with a lot of power. That right hand of his is electric and I think that he really believes he has Jeff Horn’s measure," Lewis said.

“He would have watched Terence Crawford picking Jeff off at range and we all know that Jeff fights with his hands dangerously low. If Anthony starts sniping Jeff from long range and gets that hand speed going he will be very hard to beat. I suspect that this is the last throw of the dice for Anthony and that win, lose or draw he will throw everything he has into beating Jeff Horn.’’