Liverpool legend John Barnes thinks Alisson can reach the levels of Bruce Grobbelaar and Ray Clemence to become one of the club's greatest ever goalkeepers.
The Brazilian has already won the Champions League and Premier League with the Merseyside giants.
And Barnes expects the 28-year-old to become a stalwart of the club, having recently signed a long-term contract extension until 2027.
Barnes told Goal: "I'd definitely say he can be up there with Ray Clemence and Bruce Grobbelaar as Liverpool's best-ever goalkeeper.
"However, if he leaves the club next year, then things would be different. At the end of the day, you judge people in terms of the legacy and what they leave behind and the impact they've had on the team at the end of their careers.
"Alisson has only been with Liverpool for two-and-a-half years and he's done fantastically well so if he stays and continues to play as well as he has to date, then I wouldn't be surprised if he becomes Liverpool's best-ever goalkeeper."