Complex sentence: He played his last match in the Eredivisie on October 2,1982, replacing Jurrie Koolhof, and later became a football manager, who started to work as an assistant for FC Eindhoven (1985-1986).
Split into simpler sentences: He played his last match in the Eredivisie on October 2,1982, replacing Jurrie Koolhof. Koster becames later a football manager, who started to work as an assistant for FC Eindhoven (1985-1986).