Don't get me wrong, we are a lot better, but we also have areas to work on between midfield and attack, whereas Lazio's team is basically the same as last year, so that bridges a technical gap. Also, I was having a look at their probable squad and bench. They are only missing Parolo and Ravel "Zidane" Morrison, they have some good and interesting depth, right now we lack a bit.
Buffon
Lichtsteiner - Caceres - Bonucci - Evra
Sturaro - Marchisio - Pogba
Pereyra
Mandzukic - Dybala
Subs:
Neto, Rubinho, Rugani, Barzagli, Padoin, Isla, Tello, Vitale, Coman, Zaza, Llorente, Cerri
Unavailable:
Chiellini, Asamoah, Khedira, Morata (injured)
Marchetti
Mauricio - De Vrij - Hoedt
Basta - Biglia - Onazi - Lulic
F. Anderson - Candreva
Klose
Subs:
Berisha, Gentiletti, Cana, Radu, Patric, Braafheid, Cataldi, Oikonomidis, Kishna, Keita Balde, Perea, Djordjevic
Unavailable:
Paolo (suspended), Morrison (injured)
Looking at their team I suspect we may go with 3-5-2 and drop Pereyra for Rugani.