Introduction
Adrianus Cornelis „Adrie“ Koster (Dutch pronunciation: [ɑdriˈjaːnɵs kɔrˈneːlɪs ˈɑdri ˈkɔstər]; born 18 November 1954 in Zierikzee, Zeeland) is a Dutch football manager who is currently the manager of Saudi Arabia U23. He is a former football winger from the Netherlands and former manager of AFC Ajax, Club Brugge and the Netherlands Under-21 team.
Career
He played for Roda JC (1977–1979) and PSV Eindhoven (1979–1983). He played his last match in the Eredivisie on 2 October 1982, replacing Jurrie Koolhof. In the follow season 1983/1984 retired from his professional football career.
International
Koster obtained three caps (no goals) for the Netherlands national football team in 1978.
Coaching career
Koster later became a football manager, and started to work as an assistant for FC Eindhoven (1985–1986).
Since then he worked for Willem II Tilburg (1986–1991), Roda JC (1991–1993), Helmond Sport (1993–1995), TOP Oss (1995–1997), Excelsior Rotterdam (1997–2003), VVV-Venlo (2004–2005), and RKC Waalwijk (2005–2006).
He became head of the youth academy of AFC Ajax, and was appointed manager of the club's main squad on 9 October 2007, when Henk ten Cate went to Chelsea.
On 8 April 2009 Koster has replaced Jacky Mathijssen as Club Brugge new trainer, the former PSV winger has signed a contract until the end of the season with an option for the next one.
On 25 February 2010 Koster's contract with Club Brugge was extended until the summer of 2011. He joined Beerschot following the 2011-12 season.
On June 2013 Adrie Koster signed a contract with Club Africain. Although the club was first in the league, Koster was sacked in January 2014.
On March 2014 Adrie Koster was named head coach of the Netherlands Under-21 team, after managing successfully the Netherlands U20 Hopefuls in 2012.
On 25 November 2014 Koster started to work for VfB Stuttgart as field coach of Huub Stevens.