I have a lot of admiration for Manchester United's performance in their FA Cup win against Arsenal, especially to grind it out with 10 men for an hour after Diogo Dalot was sent off. I do not want to devalue what United did against Arsenal or Liverpool but they were games where the expectation was not on them to get results.

Ruben Amorim is expecting to find out more about his Manchester United players against Southampton than he did in games with Liverpool and Arsenal. United produced two of the better performances under their new head coach in recent weeks in the 2-2 draw with Liverpool in the Premier League before beating Arsenal in the FA Cup third round,