Lukasz Piszczek
One of Jurgen Klopp’s greatest assets in Dortmund’s defence was right-back, Lukasz Piszczek. The Polish defender has announced that he will hang his boots up after his current contract runs out in 2020. Piszczek’s retirement will see an end to a brilliant career at Westfalenstadion spanning over nine years.
Along with fellow full-back, Marcel Schmelzer, and centre-backs Neven Subotic and Mats Hummels, Dortmund’s defensive line stood strong and proved hard to break at times. Piszczek was influential in BVB’s title-winning season scoring four times and chipping in eight assists.
Mats Hummels
German defender, Mats Hummels rose to fame under Jurgen Klopp during their 2011-12 and 2012-13 seasons. Hummels was an important figure in the back four who saved a good number of goals in the league winning season of 2011-12. Hummels proved to be influential once again when Dortmund was drawn with Real Madrid, Manchester City, and Ajax in the UEFA Champions League's group of death.
Dortmund did not lose a single group match and topped the group. Dortmund would eventually reach the finals of the competition before losing 2-1 to arch-rivals, Bayern Munich. Hummels tackling, positioning, passing and composure earned him a move to his childhood club, Bayern Munich at the start of the 2016-17 season.