Manchester United’s troubles with the Profit and Sustainability Rules mean they cannot go into the transfer window all guns blazing. The Red Devils will have to sell to buy, with the likes of Jadon Sancho, Mason Greenwood, and Casemiro, among others, on the chopping block. While these are players United might actively be finding buyers for, many others could depart should suitable offers arrive. One of those even started in the FA Cup final but overall, United might be happy if they get a good offer for him. However, in an ironic game of transfer market dominos, they will need to depend on riv…