In the days before Marcelo Bielsa joined Leeds United the club's sporting director Victor Orta gathered a group of players together and warned them a whirlwind was about to blow through their football club.
They were about to experience a style of management and coaching the like of which they had not seen before.
Orta wasn't wrong. Bielsa, the great Argentine from whom coaches such as Pep Guardiola and Mauricio Pochettino have taken so much, transformed Leeds on the back of ferocious training intensity, micro-managed tactical plans and a type of man management that was at times closer to sergeant major than it was football coach.