Derwall akasiya basa semutungamiri weGalatasaray muna 1987 mushure mekubatsira kirabhu yake kuve mukwikwidzi weligi (kekutanga kubva muna 1973); kunyangwe paine fungidziro yekuti anogona kutora chinzvimbo semurairidzi mukuru wechikwata chenyika cheTurkey, akasarudza kudzokera kuGerman uye kunakidzwa nemudyandigere wake. Akafara kuona kuti kupenya kwaakabatidza kwakakura zvakanyanya, neGalatasaray ichisvika kuma semi-fainari e1988-89 European Cup (yakapfuura yeEFAFA Champions League) uye ichikunda zvese UEFA Cup neEFAFA Super Cup
muna 2000.