 Complete the following phrase:  Josef Jupp Heynckes ; born 9 May 1945 is a German retired professional footballer and manager. 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. During this period the team played in its only European Cup final in 