Can claims he used to watch his former German under-21 team-mate in action when he played at Mainz and says he has no doubts about his quality.
“Of course we speak a lot because we are from the same country,” he said. “I knew Loris already from playing together for the national team many years ago.
“He’s a great lad and a very, very good goalkeeper. It’s a little bit different here from the Bundesliga but he’s well aware of that. I think he’s been doing very well so far and the fact that he kept a clean sheet recently against Manchester United is a big thing.
“It is the same if an outfield player scores a goal in that it helps your confidence. If a goalkeeper doesn’t concede, that will help him.
“As soon as I saw him (after he signed for Liverpool), I said that he just had to play with the confidence that he played with in the Bundesliga, because I saw a lot of his matches with Mainz and could only say positive things about him. I saw that he’s a very good goalkeeper."