Jadon Sancho's failure to make an impact at Manchester United is all in his head, according to interim boss Ralf Rangnick.
England winger Sancho joined United for £73million from Borussia Dortmund last summer, but has since failed to live up to that exorbitant fee.
In 23 appearances for United, Sancho has scored just twice and failed to register a single assist, confirming his difficulty in adapting to life at Old Trafford.