In my opinion, Manchester United should have sold any of their current midfielders as a way to complete the Manuel Ugarte deal, Casemiro and McTominay cannot strengthen the midfield as they would like, in fact, Casemiro has not been in the best form since last season, and Manchester United should have considered selling him when the Saudi team request for him because it looks like Casemiro's career has ended in Real Madrid, this isn't the same Casemiro we knew from Madrid.
Selling off this players may not be a problem, I'm beginning to believe that replacing them after the sales may be the biggest challenge Manchester United may face thereafter and then they don't seem to have effective scouting strength upon which they can depend to get immediate and perfect replacements for the exit of any of this players as Manchester United appears like they need an overhaul at almost every position, from their defense up ro their strikers, they don't have a very reliable and dependable players in their good form.