United need to stop trying to shoehorn the best players into one side, they need to pick the best side instead. Inevitably, that'll lead to a few noses being put out of joint. So what? A large portion of this squad has under performed for the last 18 months or so, so it's not as though we owe them anything. Time to get ruthless.
Problem we have with Rooney is that he's been made captain - poor decision, imo, because of his inclination towards drastic swings in form. I'm on record as saying, on reflection, Mata was a luxury buy, but given a sustained run in the hole, I believe he'd have a greater influence than Rooney. Problem we now have is that Rooney would appear to be close to undroppable.
You have to assume Falcao will be first choice, that RvP will play and that, as captain, Rooney will play (in the hole). In that scenario, it's hard to see where Mata will play, let alone Januzaj, who I'm very worried for.