Socceroos captain Mile Jedinak could be set to miss out on Australia's crucial World Cup qualifiers against Japan and Thailand in a few weeks time.
Jedinak has only played once in the last three months, with that coming in the Socceroos' 3-2 win over Saudi Arabia in Adelaide.
The 33-year-old was forced to sit out of the Socceroos' Confederations Cup campaign in June after undergoing surgery on his groin.
While Jedinak has returned to light training, according to a statement on Aston Villa's website, he is still approximately two weeks away from being available.
With only limited minutes under his belt in the last few months, it is unclear if Socceroos coach Ange Postecoglou will pick the skipper for the crucial qualifiers against Japan and Thailand.
Postecoglou must pick his squad in the next fortnight or so, with Jedinak only just returning to full fitness in that time.
With several Socceroos' having already begun their respective seasons by then, it will be a tough choice for Postecoglou to make.
Australia travel to Tokyo to take on Japan at the end of August before their final qualifier against Thailand at AAMI Park on September 5.
The Socceroos are third in the qualifying group, equal on points with second-place Saudi Arabia, and one point behind leaders Japan.
Only the top two get a direct ticket to the 2018 FIFA World Cup in Russia, with the third-placed nation going into a play-off with the third-placed team in the other qualifying group in Asia, and the winner then facing the fourth-placed nation from CONCACAF.