The Germany Under-21 international has made a solid start to his Liverpool career following his summer switch to Anfield.
Karius was signed in a £4.7m deal from Bundesliga outfit Mainz at the start of the summer transfer window.
The 23-year-old was handed the Liverpool number one shirt and Karius has established himself as Klopp’s first-choice goalkeeper following his return from a broken hand in September.
Liverpool’s legendary goalkeeper Grobbelaar has been critical of Belgium international Simon Mignolet in recent seasons, likening the former Sunderland man to Dracula.
And the former Zimbabwe international heaped praise on Karius ahead of Liverpool’s trip to Southampton in the Premier League on Saturday afternoon.
“I’ve been watching Karius since last season, when he was with Mainz,” Grobbelaar told Liverpool’s website. “For him to come second to Neuer in the Bundesliga was a great achievement. He is one for the future.
“When you watched his highlights, you could see that he did things that reminded me of me when I was that age.
“It was the use of the ball with his feet, but also how he read the game. I saw some games where they were in the opposition box with a corner, and left only one defender back, not two. The second defender was Karius. While the defender was marking, Karius came over the top and headed the ball near the halfway line. That’s extreme but something that I thought was very good.
“I hope he can go on to do what I did – and I’m sure he definitely can step up to the next level, which is keeping clean sheets and coming for more crosses.”
Liverpool are unbeaten in six Premier League games since Karius replaced Mignolet in the Liverpool goal.
The Reds are sitting at the top of the table and are a point ahead of second-placed Chelsea in the title race.
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