Harris a chance for Gabba

Victorian left hander Marcus Harris is on standby for state team mate Will Pucovski two days out from the fourth Test against India at the Gabba, the young opener in doubt with a shoulder injury.

Pucovski suffered a partial shoulder dislocation while diving in the field on the fifth day at the SCG, where he had impressed on Test debut while opening alongside David Warner.

The 22 year old was restricted to walking laps at the Gabba on Wednesday along with Australia's fatigued pacemen, while Harris was in the nets pressing his claims for his first Test match since the 2019 Ashes series in England.

"We'll probably know tonight I reckon, whether he (Pucovski) will be right to go," Langer told reporters on Wednesday.

"It'll either be a quick turnaround and he's back up and into it, or it might be a few weeks.

"He's a young guy, he has just played his first Test. So mentally he's going to be exhausted anyway.

"We'll keep an eye on how he pulls up today."

Langer confirmed that Pucovski had a shoulder issue before the mishap on the final day of the third Test, which seemingly amplified the problem.

"He was going to have a scan after that day's play anyway," Langer said.

"With shoulders, as long as he can bat OK and catch – it's not as big a deal in Test cricket ... we're really hopeful he will get up.

"If he doesn't then the obvious thing is Marcus Harris would come in."

David Warner, who was sent for follow-up scans after returning from his groin injury, had a brief hit on Wednesday.

"His tendon will be sore ... he will be in pain," Langer said.

"I'm 100 per cent confident he's right to go for the Test."

The series is locked at 1-1 heading in to the fourth Test match, which begins on Friday.

IMAGE: Nine Wide World of Sports.