Manchester United were knocked out of the Carabao Cup by League Two side Grimsby Town after a penalty shootout on Wednesday, the club’s first defeat to a fourth-tier opponent in its history. The upset has sharpened focus on head coach Ruben Amorim, whose 23.5% domestic win rate is the lowest recorded by a permanent United manager since Sir Alex Ferguson stepped down in 2013. Fans and commentators have questioned his tactics and called for his dismissal. For now the club’s hierarchy, led by co-owner Sir Jim Ratcliffe, is standing by the Portuguese coach. The Times and BBC report that Amorim will remain in charge for Saturday’s Premier League match against Burnley and is expected to hold formal discussions with senior executives next week about the team’s direction.