 In total, he made eight appearances for the club throughout the season although was unable to find the net, a not uncommon problem for Knights players with only eleven goals scored across the team in a disappointing season.On 30 January 2007, Casey signed a two-year deal with Sydney FC.He played in four matches in Sydney's AFC Champions League 2007 campaign and also made his mark on the scoresheet in a friendly against Marconi Stallions.