In 1989, Koeman re-joined his former Ajax coach Johan Cruyff at Barcelona, where he became a member of the famous "Dream Team". During his first season at the club, Barcelona won the Copa del Rey, beating Real Madrid 2–0 in the final. Along with players such as Hristo Stoichkov, Romário, Pep Guardiola and Michael Laudrup, Koeman helped the club win La Liga four years in a row from 1991 to 1994. In 1992, he scored the only goal of the European Cup Final against Sampdoria at Wembley Stadium to make "Barça" European Champion for the first time in its history. With this, he became the first player to score in two consecutive finals of different European competitions, having scored Barcelona's consolation goal in a 1–2 defeat against Manchester United in the 1991 European Cup Winners' Cup Final.