Lock Kane Douglas became eligible to play for Australia at the World Cup on Friday when he signed a three-year deal to join the Queensland Reds.
The 26-year-old was released from his contract with Irish province Leinster earlier this month but needed to sign up for one of Australia's five Super Rugby sides to satisfy the Australian Rugby Union's eligibility criteria.
The forward always favoured a move to his fiancee's home town of Brisbane, near where his father and rugby league-playing brother Luke live.
Douglas was a key member of the New South Wales Waratahs team that won the Super Rugby title last year under Michael Cheika, who has since taken over as Wallabies coach.
Cheika was delighted at the return of an abrasive player who, among other attributes, has the strength and technique to lock up Australia's often fragile scrum on the tighthead side.
"It's great to see Kane back playing his rugby in Australia for the long term," Cheika said in a news release.
"His return will bolster our tight five stocks and that is a strong objective of ours over the next 18 months.
"We will see how Kane is progressing physically over the next week, before considering him for any game time."
Douglas, who won 14 caps for his country before heading to Ireland, missed the latter part of his only season at Leinster because of a back injury.
"It's a really exciting time here for the game and I'm looking forward to being a part of it over the next few years," Douglas said.
"It's great to see the Wallabies build some depth across the park over the past 12 months, especially at lock, and I'll be working hard to fight my way back into contention."
Number eight Wycliff Palu and centre Matt Giteau have been recalled to the Australia squad by Cheika for next week's Rugby Championship decider against New Zealand with uncapped prop Toby Smith also getting the nod for the Sydney test.
Palu was rested for the victories over South Africa and Argentina and returns in place of Scott Higginbotham, while a recall for Giteau after he missed the test against the Pumas with a sternum injury means winger Nick Cummins drops out.
Smith was rewarded for a fine season with the Melbourne Rebels and, with four props required on matchday, looks likely to make his debut against the All Blacks at the Olympic Stadium on Saturday.
Third string hooker James Hanson was considered surplus to requirements for a test on home soil.
Australia could win a first southern hemisphere title since 2011 if they can beat the world champions in the final round of the Rugby Championship, which is shortened this year because of the World Cup.
Australia squad:
Forwards: James Slipper, Scott Sio, Greg Holmes, Sekope Kepu, Toby Smith, Stephen Moore, Tatafu Polota-Nau, Rob Simmons, Will Skelton, James Horwill, Dean Mumm, Scott Fardy, Wycliff Palu, Ben McCalman, Sean McMahon, Michael Hooper, David Pocock.
Backs: Nick Phipps, Nic White, Bernard Foley, Quade Cooper, Matt Toomua, Matt Giteau, Christian Lealiifano, Kurtley Beale, Tevita Kuridrani, Adam Ashley-Cooper, Drew Mitchell, Joe Tomane, Henry Speight, Israel Folau.