The deadline is set for Sunday 2/10 12PM eastern. Don't wait until the last day to do your extensions.
No extension offers for human teams will be accepted after the deadline. For arbitration cuts:
Team
Position - Player Name - Level
Example:
Washington Generals
SP - Jojo Godfrey - MLB
LF - Rico Suave - AAA
I'll be doing some extensions for open / inactive teams (if necessary).