Manchester United kept their trophy hopes alive with a swaggering display that battered Real Sociedad and must be the Ruben Amorim blueprint.

From the moment they fell behind early on, his side were electrified, as if finally locating the high-voltage socket under him and gleefully plugging themselves in. United came at Real Sociedad relentlessly, a whir of energy and creativity that is the best advertisement yet for where their head coach might take them.