In 2022, Sporting Kansas City will move their second team from the USL Championship to the newly formed MLS Next Pro league, which will reside in the third division of US Soccer (the same tier as USL League One). However, we don’t really know what the rules for building a roster in MLS Next Pro are at this point, despite the season starting around the end of March.
That is, until now. Jeff Rueter, of The Athletic, got the inside scoop from teams who have been learning the rules. For a full reading of the known rules, check out his story on The Athletic.