The reason Chelsea fans are so bitter about Mou@United is because all their rivals have top, elite managers. Whereas they currently have a middle-of-the-road manager; a yes man. I doubt Benitez will return, I doubt Ancelotti will ever return and Simeone will not leave Atletico, so they will have to go for a manager a level below the proven elite, like Conte, Allegri or Blanc. Allegri is probably the best option, but will he want to give up easy CV boosting at Juve?