DO NOT RELEASE ANY PLAYERS AT THIS TIME UNLESS YOU ARE
SURE YOU DO NOT WANT TO RETAIN THEM THROUGH FREE AGENCY.
If you leave a player with a zero year contract on your roster through free agency, once the winning bid is determined, you'll be given a chance to match it and keep the player. BUT if you release the player you'll lose that right. Just let them sit on your roster without a contract. I want to make this a little more idiot proof, but didn't have time to code anything for now.