The following season, Willmer was less involved in the first team, making nine appearances as Bayern won a third consecutive German title. Bayern also reached the European Cup Final, and Willmer was an unused substitute for the 2–1 defeat against FC Porto. He left the club at the end of the season, joining Hannover 96, for whom me made 46 appearances over the next two seasons, retiring in 1989 after they had been relegated from the Bundesliga.