It seems unlikely, there is no distinction between buying a player with the intention of developing them at Girona (eg: Pablo Maffeo) and buying them with the sole intention of them playing for Girona etc and not coming back to city at all (eg: Pablo Mari/Anthony Caceres). At the end of the day its just a loan, in order to crack down on it the legislation would have to affect all loans.
All I can think of is a limit on the number of players loaned, but those are already in place either domestically; the FA has a max on the number of players loaned from one UK club to another being 4, or in the affiliation agreements between CFG clubs; Breda take a max of 6 players if I remember correctly.
I think there may be an attempt to crack down on the franchising of clubs at some point, but not being a lawyer I don't know if there would even be a legal basis for doing so. Plenty of owners now have more than one club, the Nice owner is looking at buying Barnsley for example.