Barca go into Tuesday's game top of the LaLiga table.
Alonso said, “Tomorrow we'll face a very difficult match, we have to stay focused to bring home the three points. We arrive in a good state of form but it's too early to talk about winning the Champions League."
“Inter are a great team, they work a lot on tactics, they are very physical, but we're in a very good moment of form and we want to win tomorrow.
“I think there are no favourites. Inter are a great team, they have worked well over the years, they are very strong tactically and I think tomorrow will be very difficult.
“I think that apart from the fact that everyone wants to play in Europe, there is always the desire to win any title. We want to win and I'm sure good results will come."