Lealiifano will travel to Brisbane with the Brumbies for a last training session to finalise preparations for their clash against the Queensland Reds on Friday night.

The co-captain was expected to be named on the bench but the Brumbies want to ensure Lealiifano is 100 per cent fit before throwing him back into Super Rugby.

Lealiifano was diagnosed with leukaemia 11 months ago and made his return to rugby two weeks ago in an exhibition match in Singapore.

Larkham said the 29-year-old had done everything possible to prove he's ready to win selection, but will wait until the eve of the Reds match before picking his bench.

The Brumbies have made just one change to the starting XV this week, with Wallabies prop Scott Sio making his comeback from a knee injury.

Ben Alexander is set to become the most-capped player in Brumbies history if he secures a place on the bench while scrumhalf Tomas Cubelli is also expected to play his first game of the season after recovering from a knee injury.

But all eyes will be on Lealiifano after easing his way back into training and putting himself in a position to play a role in the finals.

"He was always a very popular guy and valued teammate even before he got sick," said Reds hooker and former Brumbies captain Stephen Moore.

"This has only enhanced that, the way he's fought through this. He's really galvanised the people around him.

"Whenever you have an injury you just want to get back and do what you love again. He's shown he's been able to do that, which is massively inspirational."

Lealiifano will share the captaincy duties with Sam Carter if he's cleared at the team's final training session.

Lealiifano and Carter were named as co-captains this year despite doubts surrounding Lealiifano's chances of playing this season.

Larkham said Carter would still call the shots if both are on the field at the same time.

"We spoke about it and generally when I'm on the field I run every [decision] through the [No. 10] anyway and that's Christian's spot," Carter said.

"He's the co-captain. It's the same as last year ... I've got absolutely no doubt it will be a seamless transition when he comes on. The energy and experience he has will lift the boys.

"I've got no doubt, if selected, he'll be good to go. Christian has been here all year doing everything he can to get himself right, and that in itself is an inspiration for the boys.

"It's no different if he's on or off. The boys will lift when he's around."

The Brumbies won three games in a row before the mid-season break for the international Test window.

Larkham has picked almost the same starting XV in all of those games, with Sio the only addition and Tom Banks retaining the fullback job.

"For us as coaches it's about making sure we set the right standards at training, that guys are concentrating on what they need to do on the weekend," Larkham said.

"I haven't seen guys getting carried away. I've seen plenty of energy and motivation ... our focus is squarely on this game this weekend.

"We want to make sure we get our game right before we get to [hosting a final on July 21]."

SUPER RUGBY ROUND 16

Friday: Queensland Reds v ACT Brumbies at Suncorp Stadium, 7.45pm. TV time: Live on Fox Sports 1.

Brumbies team: 15. Tom Banks, 14. Henry Speight, 13. Tevita Kuridrani, 12. Kyle Godwin, 11. Aidan Toua, 10. Wharenui Hawera, 9. Joe Powell, 8. Jordan Smiler, 7. Chris Alcock, 6. Scott Fardy, 5. Sam Carter, 4. Rory Arnold, 3. Allan Alaalatoa, 2. Josh Mann-Rea, 1. Scott Sio. Reserves: TBC.

Reds team: 15. Karmichael Hunt, 14. Izaia Perese, 13. Campbell Magnay, 12. Duncan Paia'aua, 11. Eto Nabuli, 10. Quade Cooper, 9. James Tuttle, 8. Adam Korczyk, 7. George Smith, 6. Rob Simmons, 5. Izack Rodda, 4. Kane Douglas, 3. Taniela Tupou, 2. Stephen Moore, 1. Sef Faagase. Reserves: 16. Alex Mafi, 17. Markus Vanzati , 18. Sam Talakai, 19. Cadeyrn Neville, 20. Caleb Timu, 21. Moses Sorovi, 22. Hamish Stewart, 23. Chris Kuridrani.