 Complete the following phrase:  Early into his debut season, Stojković sustained a knee injury for which he had to have surgery in Germany, forcing him to the sidelines for months. In fact, the entire 199091 league season was injury riddled for the Serb and he ended up making only eleven league appearances. Beckenbauer stepped down from the coaching post during the winter break, although he remained with the club in an adviser capacity. The new head coach to replace the famous German was Raymond Goethals. In the 