Cahill silent on Roos future

Tim Cahill has sparked possible retirement speculation after refusing to clarify his future with the Socceroos and a role in next year's Asian Cup campaign.

The Socceroo veteran scored a sensational volley in Porto Alegre, his second of this tournament after his header against Chile, and his fifth goal in World Cup history.

Straight after the game he said he was keen to be part of the Asian Cup if he was selected  by coach Ange Postecoglou.

But today he appeared to backtrack and refused to elaborate when asked to clarify about his future, saying he didn't want to take the focus off the Socceroos' clash with Spain.

And he also said he had no regrets about not getting a World Cup farewell match for fans to send him off.

“I just had one of the best farewell matches of my life,” he said. “I created something globally that everyone’s seen and witnessed.

"When you’ve got some of the biggest personalities tweeting you and hashtagging #CahillBrazil globally then I can’t ask for much more.”

Cahill deflected questions on whether he will put his hand up to play in the Asian Cup in January on home soil.

“I don’t really want to elaborate because we’ve got one more game to go and it’s not about Tim Cahill,” he said. “Probably after the tournament I will. It’s about us, it’s about the Socceroos.

"This last game’s massive. If we beat Spain then that will be like one of the biggest moments in Australian history.

Cahill is Australia’s highest ever-goal scorer and has more than 70 caps for the Socceroos.

The 34-year old, who turns 35 in December, said he has got his head around the fact that he has played his last World Cup match after picking up a second yellow against the Netherlands, meaning he's suspended for the Spain game.

"I’ve got no regrets,” Cahill said. “I don’t play a game not to go in the heat of the battle and not play for a yellow card, or play for a yellow card. There is no mincing my words. I don’t regret anything. This is my last World Cup, it was an amazing way to go out.

“It’s what I’ve always dreamed of and still I’ll be playing every kick against Spain on the bench, willing the boys on. I’m so proud and privileged to be in this situation that I’m in. It was my last game and it’s definitely an emotional time.”