Major League Soccer Tuesday confirmed that FIFA has approved amended dates for the U.S. and Canadian Primary Transfer Windows.

Those Primary Transfer Windows will open on March 10 and remain open until June 1.

The Secondary Transfer Windows for the U.S. and Canada will remain as previously announced: July 7-August 5, 2021.

* Primary Transfer Window: Wed., March 10 – Tues., June 1, 2021

* Secondary Transfer Window: Wed., July 7 – Thurs., August 5, 2021

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 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.

All in-season trades between MLS clubs must take place within these transfer windows.