Following his departure from Arsenal, Manninger enjoyed a successful career across Europe's top leagues. He represented a total of 14 clubs, including notable stints in Italy with Fiorentina, Udinese, Siena, and Juventus. It was during his time in Turin that he left an indelible mark, with Juventus expressing their condolences in an official statement that reads: "Today is a terribly sad day. He has left us not only as a great athlete, but as a man of rare values: humility, dedication, and an extraordinary professional seriousness."
Manninger remained a dependable presence at the highest level well into his late thirties, showcasing a professional longevity and character that few goalkeepers match. In 2016, at the age of 39, he made a surprise return to the Premier League by signing a short-term deal with Jurgen Klopp’s Liverpool. While he did not make a senior appearance for the Reds, his experience was highly valued in the dressing room before he officially retired from professional football in 2017.