"I am expecting a tough game, as in their last outing Inter proved they are getting better," said Spalletti.
"We have to be the same side that impressed in the last two seasons, the one that worked so well as a unit, because in terms of individual skill they perhaps have a slight advantage. At times the best team beats the best 11 players."
He added: "We have to focus on our path and not let ourselves get swept up in the atmosphere around a match of this level. We know how to act and what to do, we have to avoid creating doubt in our minds."
Spalletti also revealed he'll be taking action against Rodrigo Taddei and Philippe Mexes after they complained about the refereeing for their 2-2 draw with Fiorentina.
"I don't want players to let themselves be drawn into subjective statements, that's what the club and I are here for," he smiled.
"From here on we will fine anyone who makes statements that do not concern them. Clearly an incident can decide the result of a match, so we have to be careful otherwise it creates tension that can explode."