Career
AEK Athens and Panionios
In 2006–2007 season, Evan Kostopoulos had spent time on trial with Greek Super League clubs AEK Athens and Panionios Govindram Seksaria Science where he declined offers to returned to Australia. In 2007–2008 season, Kostopoulos played his first senior football game for South Australian Premier League club Adelaide Olympic where he was able to make 21 appearances scoring 6 goals. In 2008–2009 season, Kostopoulos signed for then South Australian Premier League club Adelaide Comets where he played 18 games scoring 4 goals.
Adelaide United
In January 2010 Kostopoulos signed for Adelaide United in Hyundai A-League.
On 30 January 2010, Kostopoulos made his senior debut for Adelaide United replacing Adam Hughes in the 79th minute in the match against Wellington Phoenix !Wellington Phoenix. At the end of the 2009–2010 A-League season Kostopoulos was loaned to Adelaide Cobras for 2010–2011 season.
On 14 April 2012, in the 2011–2012 A-League season it was announced that Kostopoulos had signed a one-year undisclosed contract with Adelaide United until the end of the 2012–2013 A-League season. Kostopoulos scored his first A-League goal against Melbourne Victory in a 4–2 home victory.
Sydney Olympic Football Club
In November 2013, Evan Kostopoulos met with Sydney Olympic Football Club officials and signed a deal with the Belmore-based club
His signature has been met with much praise from fans already, given his proven quality in the A-League.
