The Nerazzurri have had a terrible start to the season after the outfit opted to sell goal machine Eto'o to Russian club Anzhi in the summer.
"Eto'o is a great striker," the Argentine noted on Tuesday afternoon.
"He was important for us, but he's no longer an Inter player. He's not here anymore, but there are other important players who can make a difference.
"Little by little, I'm convinced that the team will return to a great level. We'll soon start putting the goals in again as well.
"We have to stay calm, relaxed and work hard. The work will pay off. This moment will pass."