Australia coach Darren Lehmann said that they are confident that Mitchell Marsh will recover before the next Test versus South Africa, which starts on March 22 in Cape Town.
"We are reasonably confident but we'll see over the next couple of days," Lehmann said of the 26-year-old's chances of recovery," Lehmann said.
Marsh, who suffered a groin strain in the second Test, has more than a week to prove his fitness before the third Test begins.
However, Lehmann went onto add that a decision on whether another player might be added to the 15-man squad would be made closer to the time.
"Medical staff will have a look at him and assess him, and then make a call from there. We're hopeful for the next Test," he said.
Marsh, who was sanctioned by the International Cricket Council for swearing at Kagiso Rabada after the South Africa fast bowler dismissed him on Monday, has been a pivotal player since returning to the Australia side in December.
Only captain Steve Smith has scored more Test runs since and Marsh has also claimed valuable wickets.
"We haven't had a lot of runs in the series so far, but he's looking as good as anyone at the moment. With the ball he was important for us with those couple of wickets late on day two (at Port Elizabeth)," added Lehmann as the squad departed for Cape Town.
Australia lost the second Test by six wickets in Port Elizabeth on Monday to leave the four-match series tied at 1-1.
(With inputs from Reuters)