Roy Keane has fallen into the the "disappearing up your own ass trap" that happens to many successful/famous people.
I am sure it is very difficult to avoid this when everyone that you have dealings with just clap you on the back and tell you how great you are and never question your judgment. Roy believes that many others have disappeared up their own ass but cannot recognise that he is also one of the disappeared.
Roy climb down out of your ass you buck eejit and if you really want to become a manager go learn your trade at a less high profile club or as an assistant somewhere and try to learn some communication/people skills and remember even the infallible Roy Keane is just as human as the next gob****e.