Matthew Spiranovic hasn't played for the Socceroos in nearly a year, but the central defender is confident signing with last year's A-League success story Western Sydney will help him grab Holger Osieck's attention in time for the World Cup.

The free agent has linked with the Wanderers for the 2013/2014 season after he left Qatari club Al-Arabi by mutual consent at the end of last term.

Having made just 12 appearances in the Middle East, Spiranovic returned to Australia and trained with last year's beaten grand finalists for two weeks, before heading to Europe to test the waters for other opportunities.

But the Geelong-born 25-year-old was confident coming back for an A-League campaign was the right decision, and has the World Cup firmly in his sights.

Spiranovic has 16 caps with the Socceroos, but hasn't been named in a squad since Australia beat South Korea 2-0 in an international friendly last November.

"For the next nine months leading up the World Cup this was the right fit for me," Spiranovic said.

"And speaking to Popa (Wanderers coach Tony Popovic) and hearing a lot of positive things, that was the main reason for coming back.

"The A-League's a tough league, with the quality of players here. And the Wanderers have now qualified for the ACL (Asian Champions League).

"I'm sure if I'm good enough to perform here then I'll be right for the World Cup next year."

Popovic said he was delighted to have Spiranovic on board and was happy to help him achieve his goal in return for the talented defender's services.

"He's confident and we're confident we can help him. We've got to help him to be the best he can be, and the decision's up to Holger," Popovic said.

"Matt adds a lot to depth in our squad. He's a quality player."

Spiranovic will certainly have his work cut out for him as he readies to compete for a starting spot with the team's established defending pair, Michael Beauchamp and Nikolai Topor-Stanley.

"Last season defence was great. But like any top team or team that wants to be successful, you need that competition for spots and that depth," Spiranovic said.

"And with Asian Champions League next year as well we'll need a good squad."

The Wanderers had the meanest defence of the A-League last season - conceding only 21 goals in total on their way to the Premier's Plate - and Popovic made it clear he won't be shifting positions around to accommodate all three players.

"Not at the moment, I haven't thought of that," Popovic said.

"We've got to first see where Matt's at in terms of his fitness and condition. It's good to have flexibility.

"I don't think we need to do anything different, I think we need to do it better."