Liverpool boss Jurgen Klopp says keeper Alisson has exceeded all expectations at Anfield.
Alisson has not conceded a Premier League goal since the 2-1 win over Crystal Palace on November 23.
"As a goalkeeper, we knew what we were getting and yes he has made steps," he said. "As a person, he has exceeded expectations because he is just an outstanding guy.
"We have a lot of really good guys but he's a special person and that's great, yes. His character and his calmness helps us a lot and he makes the difficult things look easy.
"But he has to stay like this. For a goalkeeper, you make one little mistake and the ball is in the goal. He doesn't take it for granted so I don't take it for granted either. It's great to have him here."