Former Brisbane Roar captain Craig Moore has hinted at possible retirement after this year's World Cup.

The 34-year old defender, who has enjoyed stints with Rangers, Crystal Palace and Newcastle United in the UK, is currently on an 18-month contract with Greek club Kavala after falling out with Roar officials and admits he may move onto something else once he has completed his international duties for Australia in South Africa later this year.

"I'll just see after the World Cup whether I want to keep playing or whether I'm looking at getting into the game at a different level," Moore said from Greece.

"My main aim is now to do well here, and travel to the World Cup, and hopefully do well there. I'll re-assess the situation then."

Moore has been linked with a move to a few A-League clubs including Gold Coast United but says nothing has been discussed yet and he is not thinking about much to do with his future.

"Whether I go back and play in Australia is not something I'm sure about and that's not meaning that I want to take up my (Kavala) contract option to stay here for another year and play football," he added.

"I've still not spoken to the Gold Coast and I won't."

Moore also admitted that he was unhappy with how things ended with Brisbane, who he joined in 2007.

"I was a little bit disappointed the way things finished in Australia, and it plays on your mind again," Moore said.

"You think, 'do I really want actually to go and play again?' I don't really know what I want to do.

"Apart from going to the World Cup, of course."