Complex sentence: He started his playing career with FK Velež (1967--76), where he played a record 600 games and the German club Schalke 04 (1976--78) and the Yugoslavia national football team at the 1974 FIFA World Cup.
Split into simpler sentences: He started his playing career with FK Velež (1967--76), where he played a record 600 games in his 9-year stint. He then went on to play for German club Schalke 04 (1976--78) and the Yugoslavia national football team at the 1974 FIFA World Cup.