After defeat at Getafe on Saturday, Cannavaro was asked about Real president Ramon Calderon's plans to sign "two, young attacking players" in the winter market.
"This is the same team that won the league last season with the best record in attack and defence," said the Italian. "If a new player arrives, good, and if not, then nothing happens.
"I hope this team is kept together."
On the defeat at Getafe, Cannavaro added: "It is normal that you are sad, but you have to lift your head. The league is long and we're in there fighting."