Robert Lewandowski has named Jurgen Klopp as his favourite manager, while describing the Liverpool boss as a man with "two faces" - one of a caring father and one of an authoritative coach.
Klopp lured Lewandowski to Borussia Dortmund from Lech Poznan in the summer of 2010, and the two men went on to work together at Westfalenstadion for four seasons.
BVB won two Bundesliga titles and reached a Champions League final during that period, with Lewandowski scoring an impressive 103 goals in 187 appearances.
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The Poland international ended up signing for Bayern in 2014, and Klopp made his way to Liverpool a year later to begin the next stage of his managerial career.