It says a lot about the dreadful squad-building of the pre-INEOS era at Old Trafford that a former Manchester United defender can make a case for eighteen players being moved on in the summer. And while we firmly disagree with the two-time Premier League winner as he urges the Red Devils to consider cashing in on Andre Onana and Mason Mount, we understand where Paul Parker is coming from with regards to many of the remaining 16. Casemiro is a 32-year-old playing like a 42-year-old in the heart of the Manchester United midfield. Sofyan Amrabat has made no real impact on loan at Fiorentina, whil…