Horn could hang up boxing gloves early

Keen to exit the sport with his health intact, Jeff Horn admits he could call time on his professional boxing career after only a handful more fights.

Australian boxer Jeff Horn says he will hang up his gloves after only a few more fights. (AAP)

Jeff Horn is toying with thoughts of an early retirement, admitting he could walk away from boxing as soon as he hits the $5-million mark to ensure a comfortable life for him and his family.

Horn is soaking in all the hype and glamour ahead of his US debut on Sunday morning (AEST) against Terence Crawford, where he will put his WBO welterweight championship on the line in a mandatory defence at the MGM Grand.

But it may be one of only a handful more fights left in his career.

The 30-year-old former schoolteacher is keen to get out of the fight game with his health intact - particularly now with a young daughter to look out for.

"Someone told me not long ago, 'You really don't want to be doing this for too long', and I don't want to be doing it for too long," Horn told reporters in Las Vegas.

"I've already been doing it for 10 years.

"They told me you need $5 million to retire for basically life.

"After this fight, I'll possibly be getting that type of money in my next fight so if I can win this one, it won't be far off before I can say 'I can hang them up if I want to'.

"I don't want to be one of the silly ones that hangs around until they're 40 years old and fighting."

Horn will earn a reported $2.5 million from the Crawford fight - and if he defies the odds and retains his title, his next outing could net him around double that amount.

That would see him well and truly surpass the hypothetical superannuation target he has seemingly set for himself.

Asked if he would consider hanging up the gloves at that point, Horn said: "No, not yet. It's a potential."

"It all depends on how the body is coping and how I feel in myself."

Horn hasn't started thinking about what life after boxing would look like just yet - but it probably won't involve a return to the classroom.

"I highly doubt it," he laughed.

"It's a tough, tough job teaching, I can tell you that right now. Some of the kids don't care what you've done in the past.

"Possibly something in the media ... it's definitely one of those jobs I see and think I'd enjoy doing that."