What is the source of this info? Doesn't even make much sense tbh.
Makes sense from the perspective of the investors to try and input this clause. Why invest in a product which could be devalued with another league formation?
But of course, they can not expect the clubs (Barca/Madrid) to agree to these terms who have their self interests to put first. LaLiga has made it clear that their interests are not aligned with Barca/Madrids.