Tags: Soccer Club Season.
The 2009–10 Adelaide United FC season was the clubs fifth A-League season. It includes the A-League 2009-10 season as well as any other competitions of the 2009-10 football (soccer) season.At the end of the 2008-09 regular season Adelaide United released veteran Angelo Costanzo as well as Jonas Salley Isyan Erdogan and Jason Spagnuolo with Diego Walsh moving to New Zealand club Wellington Phoenix and Saša Ognenovski moving to K-League side Seongnam Ilhwa.