"To get the kind of result we need we are going to have to turn in maybe our best 90 minutes of the season. It is going to have to be one of those great performances," said the Liverpool skipper.
"They are a fantastic side. You have to be, to be so far ahead in the Italian league, as they are at the moment. They are odds-on to make it three titles in a row and that's a fantastic achievement for them.
"We will need to take our chances against them, and that's been one of the frustrations of the season for us. We have dominated games and created lots of good clear sights of goal, and we haven't taken them.
"It's not just about the strikers, it's the whole team who have been missing those opportunities and we have to change that.
"We need to make a good start to get us up for the trip to Italy. The San Siro isn't a place where you want to be chasing a result. In a perfect world we would score a couple of goals and keep it tight.
"But Inter don't concede many goals and they have got great players all over the pitch. So we will have to play well, we know that, and this is the type of game we normally respond in."