WALLABIES vice-captain Adam Ashley-Cooper has recovered from a nerve compression injury and will return to the squad, after missing Australia's victory over Argentina on the Gold Coast last Saturday night.
The Wallabies will assemble in Sydney tomorrow, before flying to South Africa on Monday.
Australia will take on the Springboks in Cape Town next Saturday night, and Argentina in Mendoza on October 4.
Ashely-Cooper will be joined by three further additions, in halfback Will Genia, prop Benn Robinson and hooker Saia Fainga'a.
All three will return as official members of the 28-man squad, after being used as additional training squad players in the lead-up to the Test on the Gold Coast.
The squad will also see the fairytale story of 33-year-old ACT Brumbies hooker Josh Mann-Rea continue, as he gets another chance to earn his first Test cap.
Three specialist hookers were selected for the two-game tour.
"It's pleasing to be able to bring in some experienced guys for what will be an extremely challenging tour of South Africa and Argentina," Wallabies coach Ewen McKenzie said.
"We took a conservative approach with Adam's injury in our most recent Test against Argentina.
"We're confident the additional week off will serve him well going into the next stage of our campaign."
McKenzie said the squad was looking forward to the challenges of playing overseas.
"While pleased to have finished ahead on the scoreboard over the past two weeks, we understand there is still a lot of improvement left in this group and we'll be working hard to ensure we see that over the next fortnight," he said.
Wallabies squad for games against South Africa and Argentina:
Props: Ben Alexander, Pek Cowan, Sekope Kepu, Benn Robinson, James Slipper.
Hookers: Saia Fainga'a, James Hanson, Josh Mann-Rea.
Locks: Sam Carter, James Horwill, Rob Simmons.
Back row: Scott Fardy, Scott Higginbotham, Matt Hodgson, Michael Hooper (capt), Ben McCalman.
Halfbacks: Will Genia, Nick Phipps, Nic White.
Five-eighths: Kurtley Beale, Bernard Foley.
Centres: Tevita Kuridrani, Christian Leali'ifano, Matt Toomua.
Back three: Adam Ashley-Cooper, Israel Folau, Rob Horne, Joe Tomane.