I think it's pretty clear that De Gea was taken on tour to strengthen our position, but he won't play, and he's almost certainly not injured. It's also pretty clear that Di Maria wanted PSG from the very start, but they couldn't afford him last season. Now that they can, I'd expect him to leave as well. The issues we've had with Valdes mean that he'll be out the door soon too, so we will need a new 'keeper, and I think it's Romero.
The rumours of Pedro solve two issues we have, a replacement for Di Maria, and cover for Rooney. A while ago, before Di Maria was set to leave, Van Gaal said we were in for two more players: Romero and Ramos. Now with Di Maria leaving, it'll be three: Romero, Ramos and Pedro.
This way, Benzema to Arsenal and Reus to Madrid makes sense.
Bayern saying they will sell no other player to United makes sense.
Dortmund rejecting the sale of Aubameyang to Arsenal makes sense.
Barcelona signing Arda Turan as cover to replace Pedro makes sense.
But who replaces Ramos at Real Madrid? Otamendi?