Pros:
Can very occasionaly find a decent player you hadn't spotted.
Can be used to loan out or sell players in that don't have a future with you.
If you need another coach but have the maximum number of coaches, the DoF becomes a coach too (Not really sure why, doesn't happen like that irl :S)
Cons:
Wasted wages, often very high.
Normally agree deals to buy players that you could agree yourself for much less.
Often sell players you tell them to too cheap.
Don't really do much.