Question: The manager of Real Madrid who was fired during the 1997-1998 season played striker for which team in the 1960s?
Sentence (from "Jupp Heynckes"): As a player, he spent the majority of his career as a striker for Borussia Mönchengladbach in its golden era of the 1960s and '70s, where he won many national championships and the DFB-Pokal, as well as the UEFA Cup.
Relevant evidence: Yes