The Wallabies are set to announce their squad for Argentina on Thursday, with Rory Arnold and Jock Campbell set to be big inclusions.
Arnold will fill the third International slot as Samu Kerevi heads to the Sevens, set to play in the Commonwealth Games.
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Dave Rennie have been left thin in the second-row as the likes of Izack Rodda, Jed Holloway, Cadeyrn Neville and Ned Hanigan deal with injuries.
This comes with Darcy Swain missing the final two games of the England series after receiving a red card.
With the 32-year-old used in the final three games of the Spring Tour, Rennie confirmed he was on their radar after last week's defeat.
“Rory’s back from France and back for Richie’s wedding next week,” he said. “He could be an option going forward.
"Certainly from an Argentina perspective, Samu won’t travel. He’ll go away with the Sevens to the Commonwealth Games, so that gives us an opportunity to bring someone else in if required.”
Meanwhile, Campbell continues to build off his breakout season, playing a crucial role for Australia A in the Pacific Nations Cup.
Campbell's inclusion comes after injuries to Tom Banks and Andrew Kellaway, with Kellaway pushing to be fit for the South Africa Tests.
The 27-year-old was called into the training squad in April, revealing his excitement as he pushes for a maiden cap.
“I’m very excited to be a part of this camp,” he told reporters at the time.
“As much as I would like it to be that July series (against England), it’s just a three-day camp so just looking forward to getting some good feedback from the coaches and hopefully work on my game and be back here.”
The Wallabies will confirm a 36-player squad on Thursday afternoon as they prepare to open their Rugby Championship campaign against Argentina in Mendoza on July 7
The action will then head to San Juan on July 14 before the side heads back home to play South Africa in Adelaide and Sydney.
