England's Role Model Manager

England goalkeeper David James talking about the manager Fabio Capello in The Guardian: "He keeps everything clear for the team, you don't have any ambiguous situations. He gives the players the environment to work in, he arms us with the knowledge of the opposition and he trusts that the ability we have is good enough to beat that opposition." It seems to me that's a pretty good definiton of the role of the manager.
I've always found that the best managers have a clear vision and provide their people with the tools, knowledge and support to succeed. That's what I've always tried to do but it's not as easy as it sounds.
Your clear vision can easily get clouded with day-to-day distractions and compromises; tools can be expensive and it's not always easy to be sure which will really work; in order to provide knowledge, you need to have it yourself and to be sure which is relevant; supporting people should be easy but it's even easier to criticise.