I have always put questionmarks to why the board of any team, it be in italy or norway, decide to change a formula that works. Or worse, have no formula at all. Juve had something going, and the manager whished to play 4312. His squad was almost perfect for that purpose - only lacked an AM. Then, when our first team DM, CM and SS leaves - they must be replaced to be able to hold onto that blueprint.
I dont mean we have to replace Pirlo with a poor-mans-Pirlo, Vidal with Nainggolan or Tevez with Aguero. Just someone who can fill their position, so that Allegri and the rest of his team can continue their progress. I dont understand why that is so difficult.