In 2018, former Red Jamie Carragher discussed a concern that he originally had about Jurgen Klopp when the German first arrived at the club.
Carragher stated (5:43) that he was unsure if Klopp would sort out Liverpool’s defence.
In Klopp’s first full season (2016-17) at the club, his team conceded 42 goals in 38 Premier League games.
However, come the 2018-19 Premier League season, Liverpool conceded 22 goals in 38 matches.
Liverpool then had another terrific campaign defensively in the 2019-20 Premier League season. The Reds only conceded 33 goals in 38 matches.
The aforementioned numbers highlight that Klopp sorted the back four out.
The video below was provided by Sky Sports (5:43).