Manchester United held a lead for the first time in four games this week, so maybe Sascha Lense did his job. Or maybe Ralf Rangnick did his. Teams can be coached on how to defend, too, coached on how to score goals. Not all of football is in the mind.
It seems strange that Manchester United employed an interim manager renowned as the guru of modern German coaching, yet when the players messed up three leads against Middlesbrough, Burnley and Southampton, it was treated as a job for the club psychologist.