Ahead of the season, I expected Inter to be the main rival to Juve for the title. The Nerazzurri wasted points against Sassuolo, Torino and Parma, but the other teams except Juve did the same, so they are third along with Sassuolo and Fiorentina. Juve are perfect and everything is in their hands from the start, but Inter have everything to finish second. They showed how good they are in the Champions League, where they have 6 points and look favourites to pass the group with Barcelona, leaving Tottenham and PSV out. Inter have very strong squad, covered well at every position. Nainggolan plays much better under Spalleti and Politano is very useful, covering the position Candreva had. Perisic and Brozovic run most, while Asamoah is also very good as left back.
SPAL have 3 wins and 4 defeats so far, so they have good situation. However, Inter will be the first really strong opponent, so SPAL awaits tough schedule. They have decent squad, but I'm not sure will they survive or not.
Inter are in a great shape right now and I'm pretty sure they will win.