Once a free agent is won, a contract for that player must be submitted (in the same post as the FA won). This must be posted within 4 days. This will result in the following penalties:
1st & 2nd offenses - Warnings
3rd & 4th offense - 2 week probation from FA bidding
5th & 6th offense - 1 month probation from FA bidding
6th offense - 1 season probation from FA bidding
7th offense - banned from league
If it is a cap issue though then a cap move must be posted with 24 hours then a contract must be posted within 4 days of FA bid won.