He plays at centre back...

Ragnar Klavan, the little-known 30-year old Estonian footballer that Liverpool this weekend signed for €5million from FC Augsburg has established a reputation as a tough-tackling centre-back, and Jurgen Klopp will expect him to help shore up Liverpool's leaky defence.

Powerfully built, standing 6 ft 1 in tall and dominant in the air, Klavan is solid in the tackle as well as being exceptionally reliable: on average last season he made less than one four per match, and picked up just two bookings. Although he has played almost exclusively as a centre-back for his current club, FC Augsburg, he is also capable of playing as a left-sided full-back, and is efficient in bringing the ball out of defence.