Career
He joined after twelve years on youthside from Bayer 04 Leverkusen to the Süper Lig club Bursaspor. After only two Türkiye Kupası games in one and a half year by Bursaspor joined in January 2010 to Borussia Dortmund II, who earned his first professional game on 7 February 2010 against Kickers Offenbach in the 3rd Liga. He earned his first international game for the Germany national youth football team against Turkey Under-20 football team in Kusadasi.
Kaptan played as midfielder for the Germany national under-20 football team by the 2009 Fédération internationale de football association U-20 World Cup.