He praised the display against Vincenzo Montella's side, calling it a 'monster performance'.
"We played a great game against Fiorentina," he told Inter Channel. "In the first half especially, the performance was a monster. We could have won 4-1, and that would not have offended anyone.
"We are a team under construction and we need time. It is true that we have finally won at San Siro, but people always need something to talk about.
"Philippe Coutinho is a very strong player, and he played a great game, but he's got more to show. We'll see a lot more from him.
"Antonio Cassano is also very important for us, not only in terms of goals, but assists as well. Antonio is happy here, you can see it in his face."