It's good for Brazilian football to have idols, stars, big stars coming back to Brazilian clubs. The tournaments become much better, more interesting. Ze Roberto, Juninho Pernambucano, Ronaldinho Gaucho, and other players who have returned to Brazil strengthen the league and improve the tournaments.
The owner or president is the person who controls the club. The coach's job is to keep him happy. But the key to success, as a manager, is your relationship with the players. Important clubs and important players succeed when the environment is correct. The players must enjoy their work and feel free to express their talents.
Marathon running, like golf, is a game for players, not winners. That is why Callaway sells golf clubs and Nike sells running shoes. But running is unique in that the world's best racers are on the same course, at the same time, as amateurs, who have as much chance of winning as your average weekend warrior would scoring a touchdown in the NFL.