Not necessarily, I think, check the first para about ownership. I think it means that the directors of OUFC will start a separate company to undertake and benefit from, the development. So they'll own 2 companies you could call the land company and and the football company, the relationship is that the former is the landlord and the latter the lessor.
Don't think that's at all sinister, owning both would make extracting the profit offshore more complex and wouldn't make much business sense even it that wasn't the case.
It means the club owners can sell. It doesn't mean the sale will disadvantage the club, bearing in mind it's supposed to self-fund if FFP is supposed to be taken seriously.
Again, what else would you expect?