You do not need oodles and oodles of experience to be Nt manager and i have always thought a manager's role is vastly overrated anyways. Donadoni has played at the very highest level and recently and thats all you need. He would have a great understanding with players and they will all respect him as most of them are inferior to him as a player. A lot of players have gone on to big jobs without experience with varying degrees of success eg Platini with no experience took over the France's manager's job, won 8 out of 8 in EC qualifiers before going on to stink the place out in euro92. Beckenbauer took W. Germany to wc final with no experience at all in 86, took them to euro88 semis and won the wc in 90
Rijkard went to euro2000 semis, Van Basten won his qualifying group, Voeller took Germany to wc final and Klinsmann went to semis
Conversely Trapatoni with all his experience couldn't take Italy anywhere
Ericsson did nothing with England