The wounded Brumbies will find out on Thursday which players have made the cut in Test coach Michael Cheika's squad for opening Rugby Championship game.

It comes just days after the team arrived back in Canberra following their disappointing finals loss in Argentina.

It was a double blow for the likes of Speight, Christian Lealiifano and Rory Arnold, who have all played their last game for the Brumbies.

The Brumbies cult hero will move his career to Queensland next year after signing a deal to join the Reds and be closer to family in Brisbane.

He and partner Louise will stay in the capital for the birth of their first child next month before starting with the Reds.

The end of his Brumbies tenure, the impending arrival of a baby boy and Wallabies hopes have created a cocktail of emotions for the Fijian flyer.

His end of season form put him back on the Wallabies radar and he wants to reignite his international career after playing his last Test in 2017.

"I wouldn't have committed to stay in Australia if the Wallabies wasn't still the ultimate goal," Speight said.

BRUMBIES NEWS

"I still really feel I can push for that. It's beyond my control right now ...Seeing guys like Sekope Kepu having his sons watch him play, that would be awesome if I could do that.

"It is still the highest honour for me and if it wasn't, I'd be kidding myself staying in Australia."

The Brumbies were the best-performed Australian side this year, making the finals but falling short of their title goal.

They are expected to have a large chunk of players in World Cup selection contention when Cheika finalises his squad.

The first step is picking a touring party for a camp in South Africa next week and a Test against the Springboks.

Brumbies players have been granted an extra week of leave to allow them recovering from a draining trip to Argentina.

Back-rower Pete Samu (hamstring) has been ruled out for at least four weeks, while other Brumbies face a nervous wait for a phone call.

Props Scott Sio, Allan Alaalatoa and James Slipper will be in Cheika's plans alongside hooker Folau Faingaa.

Lock Arnold is expected to be included, while Rob Valetini, Lealiifano, Speight, Joe Powell, Tevita Kuridrani, Tom Banks and Toni Pulu are jostling for selection.

Wallabies selectors were expected to meet on Wednesday night to narrow down their squad for the camp with an announcement to come as early as Thursday.

Speight was happy to have a few days to recover in Canberra, saying time with his partner and having a baby on the way was a welcome distraction from play-off heartbreak.

"To come home and see that baby bump ... knowing we're four or five weeks ago, it makes it something to look forward to," Speight said.

"Our son will be born in Canberra and that's special to me, because this is home. He will always be a Canberra boy."

Lealiifano hasn't played a Test since 2016 in the months before he was diagnosed with leukaemia.

The veteran playmaker is competing with Bernard Foley and Quade Cooper for the Wallabies' flyhalf reins before he moves to Japan at the start of next year.

"This game is really demanding and the year we've had ... it adds up. Going straight into another camp is demanding on your mind and body," Lealiifano said.

"I really hope guys get some time away [this week] to freshen up. You've got to monitor those guys, like Allan Alaalatoa who have had big years this season."

Speight has played 19 Tests for the Wallabies since making his debut in 2014. He scored five tries in 14 games for the Brumbies this year, finishing his Canberra career with 46 tries from 122 games.

"It all sunk in on the flight back home," Speight said. "I'm just sad to be leaving."