To be honest, benching Higuain for the first game is a good decision. Even if Higuain was in good shape, he joined pre-season late and it makes sense to start off with what you know. The fact that he is out of shape (although he is seemingly losing weight), makes the decision even more of a no-brainer.
This is probably going to be his starting line-up:
-------------------------Buffon------------------------
---------Barzagli----Bonucci------Chiellini----------
Alves-----Lemina----Pjanic----Asamoah----Sandro
---------------Dybala------Mandzukic----------------
He will start Sandro over Evra due to his late entry into pre-season. Bonucci is a 50/50 but I think in the end he will opt for his experience and he looks in decent shape. Alves over Lichsteiner also due to length of pre-season. Sturaro and Khedira definately won't play as they are still recovering from injury and I am not sure about Pereyra as he may be transfer listed.