After completing the signing of Virgil van Dijk for £75 million in January, many Liverpool fans hoped a goalkeeper would follow the defender to Anfield.
Since arriving from Sunderland in 2013, Mignolet has failed to consistently deliver performances befitting an elite Premier League goalkeeper.
His erratic play between the sticks convinced Klopp he had to pay German side Mainz £4.7 million to bring Karius to the Premier League in 2016.
However, despite a small upturn in form in recent weeks, the German has struggled to adapt to the physical demands of the Premier League.
The Brazilian is earning rave reviews for his performances in Serie A, with the opportunity to be first-choice for his country in Russia this summer acting as motivation.
But how does Alisson compare to the current Liverpool keepers?
Using statistics from Squawka, talkSPORT has compared the three players based on their performances per 90 minutes.
Check out the results below…