That rules out a return for the Socceroos in next year's World Cup in South Africa.
The 33-year-old had been linked with possible moves to English clubs Portsmouth, Fulham and West Ham in a bid to extend his career until next year's World Cup, but his agent Steve Kutner has ruled out another contract in Europe.
"I can confirm that Mark will not be seeking another contract in England or Europe and is coming home to Australia to live.
"He's about to enter a new phase in his life and whether that includes playing again in Australia, I am not sure.
"He's had a superb 11 years or so in the UK (with Celtic, Leeds, Middlesbrough and Newcastle) and he's made his mind up to now move on.
"Mark has other priorities now and wants to take his life in a different direction."