The German shot stopper has endured a difficult start to his Anfield career since his £4.7m move to Liverpool FC from Bundesliga outfit Mainz in the 2016 summer transfer window.
Karius was initially signed to replace Simon Mignolet as Liverpool FC’s first-choice goalkeeper but a series of nervous performances prompted Klopp to resort back to the Belgian shot stopper.
However, the former Sunderland man has never convinced since his switch to Liverpool FC under Klopp’s predecessor Brendan Rodgers back in 2013.
Karius won back his first-team spot earlier this year and the Germany Under-21 international has grown in confidence over the past few months.
Indeed, the Liverpool FC number one has kept a credible seven clean sheets in his last 10 games in all competitions.
Former Chelsea FC goalkeeper Schwarzer has been impressed with Karius’ performances in the Liverpool FC team in recent months.
“He has decided Karius is his number one,” Schwarzer told Sky Sports. “He is sticking with that.
“You can see it has clearly given Karius confidence. He hasn’t got going in his Liverpool career. There were question marks over him.
“He has had a consistent run of games and he has clearly grown as a goalkeeper.”
Liverpool FC were 3-0 winners against Premier League leaders Manchester City in the first leg of their Champions League quarter-final last week.
The Reds are in third place in the Premier League table and ahead of Tottenham Hotspur on goal difference.
MORE: Man United latest news
MORE: Arsenal latest news
MORE: Chelsea latest news
MORE: Liverpool latest news