auctioning off your own players

How do you set how many you want to auction off your players for? When put my guys up auction they all start at zero? Is there a way to set a minimum that I am willing to accept
No way to set a minimum price. It is all about what others are willing to pay.
If not a "good" or "desired" player he may not be worth sending to auction as it costs 10 Auction points to do so.