Yes, the FA Cup trophy was the reason why Erik Ten Hag was given another opportunity to remain as Manchester United's head coach because Manchester United's management believes Erik Ten Hag would turn things around in Manchester United this season. But from what Erik Ten Hag has shown in the Premier League so far, it seems like Erik Ten Hag would not live up to the expectations of Manchester United management. If Erik Ten Hag fails to deliver a convincing win against Southampton this weekend, his job will be at risk.
That assumption Manchester United management had then was a bad one because they should have known that if Erik Ten Hag would turn things around he would have even done it when the premier League was still on last season but he did nothing, if they had more remaining matches on the premier League then before they play the FA Cup they would have understand that Erik Ten Hag has nothing much for Manchester United because they would have noticed it, in other words if that's really the reason why Manchester United management decided to give him another chance I wouldn't blame them because that was the last match for them and wining Manchester City was a promising one, so it clouded the decision of the club management.
If the reason for giving Ten Hag a chance because he was able to lift the FA Cup trophy, I think it is not relevant, come on, this is Manchester United, not an underdog club. They are a club that has been successful in the past and we know that MU fans are spread all over the world, the management should realize that they have to target the English League trophy and return to providing tight competition in the UCL. So far, the management has spent a lot of money on player recruitment, instead of being able to build a solid squad, Ten Hag can only damage it, the FA Cup is just a consolation for the Red Devils. The management is wrong if they still give a chance, I still doubt that Ten Hag can fix that mistake and bring MU into a strong candidate for the EPL champion this season. He doesn't have that ability.