When did Bayern Munich win their first competitive game under Barcelona's former manager?
Louis van Gaal Aloysius Paulus Maria "Louis" van Gaal, (] ; born 8 August 1951) is a Dutch football manager and former player. He was formerly manager of Ajax, Barcelona, AZ, Bayern Munich, the Netherlands and Manchester United. He is one of the most decorated managers in world football, having won 20 major honours in his managerial career.
1987–88 Bundesliga The 1987–88 Bundesliga was the 25th season of the Bundesliga, the premier football league in West Germany. It began on 31 July 1987 and ended on 21 May 1988. FC Bayern Munich were the defending champions.