Australia playmaker Ajdin Hrustic was injured playing for Hellas Verona
Tunisia surprisingly left out the experienced Wahbi Khazri from their opening match with Denmark, but he could come back into the side.
After his booking in that game Taha Khenissi is one yellow card away from a suspension.
Australia coach Graham Arnold says key playmaker Ajdin Hrustic is "95 percent fit" after an ankle injury, so he should start.
Aaron Mooy, Mitchell Duke and Jackson Irvine are a booking away from a ban.
-- Courtesy of BBC Sport