LIVERPOOL, England — Liverpool has signed goalkeeper Loris Karius from German club Mainz for $7 million.

Karius will take the No. 1 jersey while current first-choice keeper Simon Mignolet retains No. 22.

Liverpool manager Juergen Klopp says Karius "will add to the quality we have in this position and I look forward to working with him and all our players when we return for pre-season."

Mignolet's status has not been threatened since arriving three years ago despite some unconvincing performances.

Liverpool finished eighth in the Premier League and lost in the League Cup and Europa League finals.