Inter Milan manager Roberto Mancini feels that his side can still improve despite their 100% start to the season in Serie A.
The table-topping team face second-placed Fiorentina at home tomorrow, and the former Manchester City boss believes that his side must keep improving if they want to make a serious challenge for the Scudetto.
Mancini told reporters: "I am able to judge if the team is playing well or not. We can improve and we're still making some mistakes. I don't think there are any teams that can be considered perfect.
"I'm quite pleased for the moment. We don't only need to score more goals; we have to improve defensively too, our possession play - everything."
Inter have won five out of five in Serie A so far this season, scoring six goals while conceding only once.