Roy Keane is speedrunning the classic British/Irish rent-a-quote media personality routine like a Jeremy Clarkson, Glinner, Rod Liddle or Robert Kilroy-Silk
We're not far off from him saying something bigoted that gets him sacked from one or more jobs. Personally I hope it doesn't happen and he sticks around to keep taking pot shots at Man Utd.
Wouldn't surprise me if one of the reasons he dislikes Carrick is that Carrick was a better midfielder than him.