SAS Australia will see boxer Anthony Mundine, former Roosters captain Boyd Cordner and Olympian Peter Bol star on the new series, according to a report in The Daily Telegraph.
Craig McLachlan has already been announced as the lead star of the series after being found not guilty of sexual misconduct.
Anthony Mundine is one of Australia's most well-known sports stars, and one of the country's most celebrated boxers.
Meanwhile, middle-distance runner Peter Bol, who finished fourth in the 800m at the last Olympics, was recently embroiled in a banned substance scandal with Athletics Australia
He was later cleared in his B sample of using banned substances.
It comes after Craig McLachlan was confirmed as one of next season's biggest stars of the hit reality series, according to a report in The Daily Telegraph.
McLachlan's girlfriend Vanessa Scammell revealed he almost didn't make it onto the military-style show after he was rushed into emergency surgery in December.
'Craig's race against the clock to put on weight, gain strength and pass his fitness test after the emergency abdominal surgery late last year was far from being a fait accompli,' she said.
'He was so methodical and careful with his training post surgery. The biggest hurdles for him were to be able to complete the pre course requirements.'
One Nation leader Pauline Hanson is also rumoured to have signed up to this year's season of SAS Australia.
Other celebrities linked to the upcoming season include troubled AFL star Ben Cousins and transgender footy great Dani Laidley.
It would have been McLachlan's first time on stage in five years after he dropped his high-profile defamation lawsuit against ABC, Sydney Morning Herald and Christie Whelan Browne.
It is understood McLachlan racked up legal bills of more than $3million from the legal fight.
He was intending to sue the ABC, Sydney Morning Herald and Ms Whelan Browne over claims he'd touched, kissed and groped actresses without permission in the Rocky Horror stage production, Neighbours, City Homicide, and The Doctor Blake Mysteries.
He wrote off the claims by Ms Whelan Browne, and those of Erika Haynatz and Erika Scundi as 'utterly and entirely false'.
He dropped the defamation suit on the first day of 11 women due to give evidence.