Would the FA be allowed to do that? Isn't it an EU issue? The best my googling could get is a player is free to sign a pre contract with any other club registered in an EU association.Gone quiet on that one.
When you actually look for details in this kind of thing, it is notoriously sketchy. If you look up loan regulations & whether it counts toward a players eligibility as 'home grown' for example it's really difficult.
There is a section in the FA rules which might cover this pre contract business, which is worded in such a way that it suggests that a club has the right to 'offer' a player over 24 a new contract, when the present one runs out & then, on receipt of that offer, the player has 28 days to accept, if the offer is rejected, 'the player is immediately free to negotiate with another club'.
So it could perhaps be, that is the FA rule here, wheras the rule for other counties follows Bosman.
Hence, if you want to play here, you have to abide by the FA rule.
That's the best I can come up with.
I did find some FA rules which stated after April 1st a player is free to negotiate with other clubs but I didn't really understand what it meant