What is the nationality of the player who provided 20 assists in the 2008–09 VfL Wolfsburg season ? 
Zvjezdan Misimović: Zvjezdan Misimović (, ] ; born 5 June 1982) is a Bosnian former footballer who most notably played for Bayern Munich, VfL Wolfsburg, Galatasaray, Dynamo Moscow and Beijing Renhe as an attacking midfielder, during his active playing career.
i don't know