Centre half Nikola Petkovic has extended his stay at Sydney with a two year contract extension which will keep him at the club until the end of the 2015/16 season.
Petkovic joined at the start of this season and has cemented a place in the Sky Blues defence with a series of impressive performances.
“I’m very happy here at Sydney FC and the club matches the ambitious targets I am setting for myself,” said the 27 year old. “This is the right option for me, it’s now our target to win the Grand Final and play regularly in the Asian Champions League.
"The club is in a stable position and has excellent backing, while the support of the Members is another big factor in my decision.
“Sydney FC is recognised as a big club in Australia and I’m very proud to be staying for another two years.”
Petkovic has played in every minute of every game for the club this season, and played in the UEFA Champions League for Hapoel Tel-Aviv as recently as 2012.
He has also represented Serbia 34 times at under 21 level.
Coach Frank Farina hailed Petkovic's impact since arriving in September and believes he will only get better.
“Nikola has made the transition to the A-League very well and has performed consistently so far this season," said Farina. “He has fitted into our style without any problems and is comfortable playing an attacking, possession based game.
“He has shown courage in his performances and shares the club’s ambitions. I’m sure he will become an even bigger asset in the years ahead.”
The Serbian joins Vedran Janjetovic in committing himself to the club for the next two years, with the goalkeeper signing a new deal last month.