In an exclusive interview with NITV News, Mundine said he is still young in the sport and won’t be hanging up the gloves any time soon.
Mundine announced his return to the ring last week, with a bout scheduled for November against undefeated knockout master Rabchenko.
“I cannot see myself losing, I seriously can’t,” he said.
“So I’m looking forward to the next stage in my career, this fights going to set up the mega fights that I yearn for so it’s do or die.”
At 39, Mundine is 11 years his opponent’s senior, but he says age is just a number.
“Don’t talk about age, I don’t want to hear that,” he said.
“You tell me I’m too old and I’ll keep doing what I do and that’s how it’s going to be.”
He has left the country, en route to Las Vegas for three weeks of intense training as he dismisses rumours that his health might be at risk.
“I don’t get hit, I’ve never been beaten up,” he said.
“The only scratches I have are from elbows. I mean look at me, I’m looking and feeling 25.”
In his most recent fight against Joshua Clottey, Mundine was knocked down five times. He says this was due to a lack of mental preparation.
“There has been three times where I haven’t turned up mentally prepared in my career and that was one of them,” he said.
“I’ve got to be a lot more attentive and do things over and over to make sure my defence next time is impregnable.”
He says the loss has brought him one step closer to a battle against undefeated American boxer Floyd Mayweather.
“When the Clottey fight knocked me off course I fell into this predicament and now I have an opportunity that better,” he said.
“Floyd won’t fight me but i would like to fight Alvarez and after I beat him I will have earned that right to fight the very best.”
Mundine told NITV News he won’t consider retirement until that opportunity arises.