Rosters

Teams can begin officially signing players, extending players, and completing trades (12:01 pm ET) The 24-hour period for matching an RFA offer sheet signed during the moratorium begins (12:01 pm ET)

Moratorium period begins Restricted free agents can sign an offer sheet Teams can begin signing players to one- or two-year minimum-salary contracts Teams can begin signing players to two-way contracts Teams can begin signing first-round picks to rookie [...]

If a team wants to acquire a player in a trade and trade him with other players before the deadline, he must be acquired by 12/16 if an exception is used to acquire him. Note: He can [...]