Meet the man behind Manuel Neuer, Mesut Ozil, Leroy Sane, Joel Matip and Schalke's never-ending talent factory
As soon as Germany lifted the 2014 World Cup, a summer on from an all-Bundesliga Champions League final, the question was - how did they do it?
Well one of the answers was sitting at home minding his own business, although he’d never admit his status as one of the most influential figures in the history of German football.
Before the World Cup victory, a treble-winning campaign from Bayern Munich a year earlier saw Borussia Dortmund beaten at Wembley, after both sides had torn apart peak Barce