The Perth boss said: "I've spoken to Craig because he wants somewhere to play with next summer's World Cup in South Africa in mind. The Australian season is coming to a close.
"We discussed the possibility of him coming to Perth on a short-term deal. Now I'm waiting for an answer. He has indicated he is thinking seriously about it.
"He is vastly experienced and having played with Craig at Ibrox I hold him in very high regard."