He was shown the door seven months after that Euro glory when Chelsea lost to Juventus having kept £50million Fernando Torres on the bench for most of the game.
Blues full-back Cesar Azpilicueta says boss Conte must go back to the drawing board.
The Spaniard said: “We changed formation last season — but now they have cameras everywhere they can analyse so easily.
“Sometimes opponents do it well and we have to be ready to try other options.”