Fiji-born Sefa Naivalu of Melbourne Rebels is yet to complete his nationality switch, but will train with the squad before becoming eligible on Sept. 18 and is one of four uncapped inclusions alongside Kyle Godwin, Lopeti Timani and Tom Robertson.
Cheika has already handed debuts to seven players in 2016, but his inexperienced squad has also lost 116-cap Adam Ashley-Cooper, who has returned to France for the 2016-17 Top 14 season with Bordeaux Begles.
Matt Giteau, Ben McCalman, Matt Toomua and Rob Horne miss out due to injury, but fit-again Luke Morahan returns.
The Wallabies meet South Africa in Brisbane, on Sept. 10 before facing Argentina in Perth on Saturday Sept. 17.
Wallabies squad: Allan Alaalatoa, Rory Arnold, Adam Coleman, Quade Cooper, Kane Douglas, Scott Fardy, Israel Folau, Bernard Foley, Will Genia, Kyle Godwin, James Hanson, Dane Haylett-Petty, Reece Hodge, Michael Hooper, Sekope Kepu, Samu Kerevi, Tevita Kuridrani, Sean McMahon, Drew Mitchell, Stephen Moore (c), Luke Morahan, Dean Mumm, Sefa Naivalu, Nick Phipps, David Pocock, Tatafu Polota-Nau, Tom Robertson, Rob Simmons, Scott Sio, Will Skelton, Henry Speight, James Slipper, Lopeti Timani.
(Reporting by Ed Dove; editing by Amlan Chakraborty)
