The Australia international is yet to feature this season after suffering a knee injury during the summer.
The 28-year-old told the club's website: "It's probably just another couple of weeks before I start training and then it's just about getting fit.
"It's been very frustrating. It's not nice sitting on the sidelines, especially when it's nice outside and everyone's training and you're stuck inside.
"I just want to come back and add something to the team. Hopefully I can do that."