The German shot stopper established himself as the Reds’ first-choice goalkeeper in the second half of the 2017-18 season.
Indeed, Karius was credited with his improved performances as the 24-year-old continued to keep Simon Mignolet on the sidelines.
However, the former Mainz goalkeeper endured a forgettable 90 minutes in the Champions League final at Kiev.
Karius’ poor throw was intercepted by Karim Benzema to break the deadlock in the second half against the run of play.
Senegal international Sadio Mane levelled the tie before Gareth Bale netted an incredible overhead kick to restore their lead.
Karius made his second mistake of the night after he parried Bale’s long-range shot into his own net to secure a 3-1 win for los Blancos.
Liverpool FC have been linked with a move to sign AS Roma goalkeeper Alisson Becker and Stoke City shot stopper Jack Butland.
Former Liverpool FC star Lawrenson has urged Klopp to sign a new goalkeeper in the 2018 summer transfer window.
“I am afraid they can’t move on with Karius. You cannot make those mistakes at that level,” Lawrenson told BBC Radio 5 Live.
The Reds finished in fourth place in the Premier League table after finishing the season with a 4-0 win over Brighton and Hove Albion.
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