its still MLS and MLS owns his rights. They are very deferential to the owners, but they aren't letting him go for nothing, just like Adams.
I guess maybe my speculation is that he didnt sign with RBNY, but with RBL. RBL loans him to RBNY until he's 18. Not sure if MLS would have any control over that. There is just about no basis for this, but I wonder how you can guarantee a transfer to RBL in 2022 unless he is on their books somehow.