Several key MLS dates in 2020, including both the winter and summer MLS transfer windows, were officially released ahead of the new regular season which kicks off on Feb. 29.
The transfer windows are the periods in which MLS teams can officially register any new players who were previously under contract with clubs based outside MLS and for which an International Transfer Certificate (ITC) is required. While deals may be agreed upon outside these windows, the transfer and receipt of an ITC are required in order to officially add a player to a roster, thus allowing him to be eligible for official competitions.