Milner should have waited and gone and played in the centre at United as I am convinced 6 more months in the form he was in would have cemented him as a central midfield player, not a utility wide man.
Barry has had a good career at City, and all three of Milner, Barry and Young were justified in leaving.
Amusingly, Downing could actually be the most effective for us at the moment, as creating for Benteke and Bent would be something he would be very effective at.