Graham Arnold has secured his future with Sydney FC after signing a two-year contract extension to remain at Moore Park until the end of the 2018-19 season.

After attracting interest from clubs domestically and abroad - including Dutch club NAC Breda - Arnold decided to remain with the league leaders having been impressed with the vision of the board to grow the club, including improving facilities.

New deal: Graham Arnold with Sydney FC chairman Scott Barlow after signing a new contract. Credit:Ben Rushton

Arnold's new deal ensures that he is set to become the longest serving coach at the club, surpassing Viteszlav Lavicka's three seasons spent with Sydney FC between 2009 and 2012.

The new deal is a major boost to the club's hopes of retaining the bulk of their squad with up to 13 players off contract at the end of the season. It's understood many of those in the final year of their deals with Sydney wanted to know the future of the club's coaching position before deciding whether to remain or seek moves elsewhere.