Are Nix a chance with Spiranovic? Could build around him and Fox at CB. Dura could go on for a couple more as a backup instead of retirement.
A very decent defender, still in his prime. His main motivation by now would probably be career money rather than Socceroo selection. I would say he is unlikely to be called up to the national duty, unless Marwijk (the new coach) decides he is worth a look over the current crop. I personally doubt it as he has always been on the fringes of the senior team only.
Spira can still command a decent coin in China, where has spent the last three seasons, and apart from the two seasons with the WSW has not played in the A-League. To make him an offer it would have to be a good one (marquee?) to lure him away, and to overcome any misgivings: he is a good friend of Dario Vidosic (they both played for Nuremberg and for the Olyroos) and Dario's comments on his Nix experience (and on Darije in particular) might be less than complimentary.