This purported move raises a lot of questions.
Undoubtedly, AENA have relations with every airline that operates to its airports in Spain. As it's a Government-owned near-monopoly in Spain, that doesn't necessarily translate into 'good relations'.
Furthermore, Spain is bankrupt, so everything in its public sector is going to be starved of funds, especially overseas assets. Will the Spanish Government really stump up hundreds of millions of euros to a) purchase LTN and b) carry out the improvements it requires to develop further?