Despite all of our love for the greatest manager of all time, Fergie strikes me as someone who has 'pets' in the dressing room, and for whatever reason has other players he never truly gets on with. He clearly had only enough love in him to coddle, baby, obsess over and adore one Portuguese young winger, despite having 2 in the squad. And fair enough, that brought us a lot of success, was right for the team and so forth. But anyone who watched Nani could see that to get the best out of him, you had to persevere and give him encouragement - not drop him at every mistake. Personally I just think Fergie had enough issues, and Valencia was the easiest person on Earth to manage and was doing a job, so didn't bother with Nani.
And yes, I know, these are professionals make obscene money and they should be able to motivate themselves and not need the arm around the proverbial shoulder.
Moyes made so many mistakes it's difficult to keep up, but in a period of time when we created nothing, turning his back on one of our few senior creative players is yet another blot.