No. The manager is there to get the best deal for himself. The same self interest you speak of for the player is also embodied in the actions of the manager. The countervailing power between them generally determines the outcome. There are exceptions of course but generally everyone is in it for their own benefit.
The Managers you would expect seek short term gain rather than long term - which is pretty much backed by so many Aussie players going overseas to essentially sit on the pine.
There are more players than managers and as such the managers know if a player is not profitable to them they can move on to the next one who is or at least shows more potential. Players on the other hand have a much more limited choice so finding a new manager is not as easy.






