Would you have him at Liverpool given the chance? I don't know what he does (did), but I'm interested whether some of what I envy in Ferguson's Man Utd could be transplanted to Liverpool with a member of their coaching set up.
He's a Coerver coach, so if we look at that aspect, he would be great for players like Coutinho, Sterling, Suso, Suarez, Sturridge, Assaidi (if he's kept), Agger, Ibe, Johnson, Allen and Borini to work with. In terms of the benefits to other players, he would help them to become individually comfortable on the ball - not technically, but mentally. His 4v4 methods would neatly fit into the Rodgers way, and he would have a different perspective that could add to the training plan. And to add to all that, he has the experience of seeing up close what made the United teams tick, and could offer that perspective too, in much the same way that I would bet Kidd's experience with United helped City a lot when they won the league, in terms of mentality and what to expect. So from a professional standpoint, I think he would be a great addition to the staff, and would settle in quickly. But I'm not sure there's a position open. If not, then shoe-horning him in would only lead to frustration as there would be less for him to do. But in terms of "best practices", I'd have him as a coach like a shot if I was manager.