I think this is a key factor in management. Players who were great, often seem to lack the man management skills. Look at the the likes of Souness, Keane... they were both great players because of the way they played the game and they had that desire to win. They were tactically great as players too. But being a leader on the pitch is not the same as being a leader off it. Both have a history of run-ins with players too. Tactically it's also different as well... it's one thing playing with knowledge - it's another trying to apply it. the same could be said of the likes of Guillet, Hoddle, Barnes, Robson, Ossie Ardilles, Keegan, Tony Adams, and even Stoichkov... all of whom have played the game at a high level and abroad gaining different experience , and we're in their own way great players... but utter tripe as managers. But you do have the odd one... Like Kenny. But how many failures would you have to go through to find a Kenny? It's it lot tougher than we all think.