^What i meant was that Man Utd don't favour the wing back system.

But they do indeed favour the anchor man system. That is the role Keane and especially Phil Neville fulfills for them.

4-2-2-1-1. Though with Saha, it could change to 4-2-2-2. Of course, the formation is not so rigid them remain this way. Keane pushes forwards. Strikers drop back. Wingers support attack and go central.