One ACT Brumby could be playing for the "enemy", with the Wallabies "a very good chance" of playing Argentina at Canberra Stadium in next year's Rugby Championship.
Pumas halfback Tomas Cubelli made his first appearance for the Brumbies in a pre-season trial against the NSW Waratahs in Wagga Wagga on Saturday and he could find himself representing his country on what will be his new home ground.
Brumbies chief executive Michael Jones said September 11, 2017, could be the date for a return of Test rugby to Canberra and he was confident it would be a sellout.
Jones also said it would help the Brumbies bring the crowds back to Canberra Stadium for Super Rugby by helping increase interest in the game.
Crowds at Canberra Stadium have been falling over the past decade.
The Brumbies have Wallabies in almost every position and can now even boast an Argentinian international in their ranks, but the Australian team has not played in Canberra for 5½ years - since the Wallabies beat Fiji 49-3 in 2010.
"We're pushing ahead for it as hard as we can and at this stage I think it's a very good chance. It's all subject to the final commercial deal ... but I would be pretty optimistic the game will be there," Jones told Fairfax Media on Saturday.
"We've got a lot of Wallabies in the team and we want to continue the association with the ARU to promote the game.
"When the Lions have come in the past the Canberra crowd get right behind it and come out to it, so I'd be really surprised if we don't get a sellout to the Test.
"The more people that go there and go, 'Hey, this is a good experience' [the better for us]."
Cubelli has played 45 Tests for Argentina and was part of their World Cup campaign, where the Pumas were knocked out in the semi-finals by the Wallabies.
He has already impressed at Brumbies HQ with coach Stephen Larkham saying he has the best running game of any scrum-half in Brumbies history.
Jones said one of the reasons Cubelli came to Canberra was to help cement his spot in the Argentinian side through his performances for the Brumbies.
Cubelli has signed an initial two-year deal with the Brumbies, which would take him through to the proposed Test between the Wallabies and Argentina next year.
His Argentinian teammates will be looking to do the same, with the Argentina Jaguars coming into the Super Rugby competition this season.
"Hopefully that will be the case and he'll just change jerseys for the weekend and play for the enemy," Jones joked.
"That's what he wants to do, that's one of the great things about Tomas - he's really fired up to have a great Super Rugby season so he can make sure he's seen by the Argentinian selectors.
"There'll be guys week in, week out in the Argentinian Super Rugby side who are going to stake claims for positions and so what he's really, really keen to do is have a great season so that effectively he can cement his spot back each time there's a Puma call-up. That's one of his big targets."