Amorim would like United to build up with a genuine three at the back, rather than the four it has been when protection is the first priority. At Anfield, United took the lead because Martinez sensed a moment to press high, snapping into Mohamed Salah to win the ball and then stay up to receive Fernandes’ slipped pass.

Manchester United manager Ruben Amorim has challenged his squad to show more consistency in their forthcoming fixtures.

At the end of their two-hour slugfest with Arsenal, Man United had a full back at centre back, a midfielder at wing back and a centre back up front.