Liverpool assistant manager Pep Lijnders is full of praise for Caoimhin Kelleher.
The Irish goalkeeper will start Sunday's Carabao Cup final against Chelsea.
Lijnders said: "I still know his first game: Derby away, no-one watching. Not on a main pitch, the sixth pitch! He saved a penalty and you saw a boy who was 15 at the time not an easy situation and with his feet already impressed in a trial game. I think he played for many years outfield before he became a goalkeeper.
"I am really pleased for him. At Liverpool you need two good goalkeepers and we have that.
"It is a huge compliment to John [Achterberg], [Claudio] Taffarel and all the guys at the academy because we produce some good goalkeepers but Caoimhin is probably the most outstanding one, and the most complete. He can make match-winning saves, has this, and he sees the game, knows how to act as the free player with direction and he is calm, has serenity.
"It creates calmness for the others. Especially the way we want to play. It's important to have a goalkeeper like that. Again, it is the culture with our own players. It's cool."