Probably not. Inter are stronger, and are continuing to strengthen their squad. Only after we have settled on who we are set to acquire to take up the RB and LB slots as starters can we decide on whether we are strong enough to mount a challenege. Fullbacks are very important in the modern game (and particularly if we are going to play 4-3-1-2 or 4-3-2-1), and if we are looking at a quartet of Zebina/Grygera/Grosso/Molinaro, then I fear we stand no chance against Inter, as that quartet is simply not good enough to challenege on all fronts and compete at the highest level, due to a combination of inconsistency, being suspect defensively and/or offensively, as well as injury concerns.
I also have doubts about our CB pairing of Chiellini and Canna/Legro. The Azzurri have not impressed at all lately, and these 3 players have been the ones marshalling the defence in the most recent encounters, namely the narrow 4-3 victory over New Zeland (how is it possible to concede 3 against NZ, unless you are Fiji or something; and please don't blame it all on Amelia; the defense has a part to play in those goals as well), and the 1-0 setback against Egypt.
In short, I believe our current defensive set-up will cost us some games next season, games which might potentially cost us the Serie A title, and lead to a QF elimination in the CL (unless we get an English team, Barca, or Madrid in the 2nd round of the CL, which would obviously entail elimination at an earlier stage).