With A-League coaching requirements increasing in size every season, Moss will work alongside Steve Corica as an additional coaching resource, as the club looks to go back to back in the A-League and seeks success in the AFC Champions League and FFA Cup competitions.

Arnold and Moss worked together at Central Coast for several seasons, before the former departed for Japan, with the latter taking over as head coach.

“Being a Sydney boy it is an honour to be working for a club as big as Sydney FC,” Moss said.

“I’m very confident I can add more passion, experience and help improve on the remarkable job which was done last season.

“After winning the double and with the challenge of the AFC Champions League ahead, I look to contribute to the club’s success.

Arnold & Moss together at Central Coast, with John Kosmina (left)

“It’s fantastic to be joining the club at such an exciting time and it’s a big challenge.”

Moss will have responsibility for assisting staff on a day to day basis on the training field with a busy campaign of A-League and AFC Champions League ahead.

“Phil has already had experience in coaching in the A-League and will bring those experiences to our club,” Arnold said.

“I’m delighted to be able to bring him on board and strengthen our coaching team.

“I look forward to working with Phil in the future to progress Sydney FC.”

Sydney FC’s players will return for pre-season next Monday 3 July as they prepare for their huge clash with English Premier League giants Arsenal FC on Thursday 13 July.