Obsessive Ralf Rangnick will bring an intense fire to Manchester United as he strives to return the club to former glory.
Counterpart and former Bayern Munich technical director Michael Reschke has long pitted his wits against Rangnick and is under no illusion that United's new interim coach is one of the greatest football brains in Europe: an intense, meticulous planner with an incredible work ethic.
'Ralf will expect his staff to work 18 hours a day at Manchester United... or maybe 17 because even he recognises they have a right to sleep,' says Reschke only half-joking.