It’s a fair question from the other poster to be honest.
He’s a spectacular player but managed only 12G+A in the league last season. In comparison, Sancho who we consider here like a shite player managed 9G+A, while missing 2 full months of competition
Also we are yet to see a Brighton player shine once he moved to another team.
You could make a case for Trossard but even he is not established in the first XI.
There’s no denying Mitoma’s quality but splashing cash in him would do no good for United or Mitoma. He’d be called an instant flop should he fail to score or assist in more than two games in a row