Manchester United take on Coventry City tomorrow in what could end up being the biggest game of Erik ten Hag’s time at Old Trafford. Ten Hag takes his United team to Wembley knowing that a win is a must and that if they do lose, then he will come under even more pressure from supporters. The Dutchman is already fighting for his job. With Sir Jim Ratcliffe and INEOS now involved at United, there is even bigger pressure on Ten Hag as the new ownership assess its options ahead of the summer. Of course, replacing Ten Hag with the right man would be another matter. England boss Gareth Southgate has…