It would be great to see Rio come back to United as a coach but he wasn't on the same level as a leader and doesn't currently hold the UEFA licences required to be a manager in the top flight. Keane does, along with ten years managerial experience at Championship, Premier League and International levels, on top of being the most successful captain in the club's history and having worked alongside Clough, Ferguson and O'Neill.
Anyway...
“On my first day of training, he gave me an absolute rollocking for playing an easy square ball instead of looking to do something positive,
“I saw that day why United were winners and why Roy was at the heart of it.”
~Rio Ferdinand
It was Keano who helped take Rio to the next level. Be great to see if he can do the same with our current lot.