You have a point because one of the major issues with Manchester United is there midfielder and goalkeeper, although in times Manchester United goal goalkeeper, De Gea was just the goalkeeper that really understand the actual pattern of Manchester United I don't no why they decided to sold him when there problem was not from the goalkeeper but I believe they now understand how important De Gea was to the club.

and even there current goalkeeper Onana is not helping Manchester United at all, but considering his performance on AC Milan I was even thinking his performance on Manchester United will be same as when he was at AC Milan but it was quite the opposite, but however if Manchester United should work on there midfielder there could be more chances of getting back to there former performance.