Former Wallabies skipper Stirling Mortlock admits he’ll head into retirement unsatisfied despite 15 years of top class rugby.

The 35-year-old announced at a Melbourne Rebels fan day that he would play one last game in Australia – against Queensland at AAMI Park on June 29 – and then two in South Africa to finish the Super Rugby season before hanging up his boots for good next month.

Mortlock, who had one year to go on his three-year deal with the fledgling Rebels, will move into a coaching/ambassador role next season.

He joined the club as its marquee signing for its debut season in 2011 from the Brumbies where he played most of his Super Rugby career, starting in 1998.

At his peak, Mortlock, a powerful runner and defender, was one of the best outside centres in world rugby but he’s battled calf muscle injuries this season and only had his first start in round 12.

With the body unable to match the mind, his illustrious career will end on 80 Tests since making his debut in 2000, amassing 489 points.

“There’s no secret I still love what I do and still love playing and training and contributing. It’s more about my body,” said Mortlock on Sunday.

“Being on the sidelines for nine of 10 weeks this season was extremely frustrating and tough. My body is back in the shape I want it to be but I think it is the right time (to retire).”

Asked if he was satisfied with what he’d achieved, Mortlock said no.

“You always look back and think there are things you could have done more of or better,” he said.

“That fuel and hunger and desire is what helps guys get the best out of themselves.”

Wallabies coach Robbie Deans said Mortlock, who hasn’t played a Test since 2009, was involved in many of the golden moments of Australian rugby.

“His playing achievements speak for themselves. His is a record which is a testament to his commitment, self belief and his full throttle approach to the game,” Deans said.

But his career has been about more than mere statistics.

“Stirling has been a central figure in many of the most golden moments in Australian rugby in the professional era.”

Mortlock remains the highest-scoring Australian player in Super Rugby history, the only to rack up more than 1000 points.

Current Wallaby Adam Ashley-Cooper, who played with Mortlock at the Brumbies, said he owed plenty to the veteran.

“He took me under his wing and I’ve got every achievement to thank Stirlo for because he was always there and mentored a lot of young guys and I was part of that,” he said.