But you are forgetting other practical thing they can do. The "If i cant win, No one wins" plan.
They exercise the Buyback clause. Moratta publicly states he doesnt want to return. Madrid doesnt give a fuk and buys him anyways, just to resale him for 55M to fund their new toy. Both teams lose Morata, And Morata himself ends far away from both juve and real in any random team which paid his new price.
But Madrid would win anyways because their morata sale will give them money so..