Udinese host the Bianconeri on Saturday and Spalletti has warned his players not to underestimate the Serie A champions, after a recent slump that has seen them eliminated from Europe, a first leg Coppa Italia Cup final defeat to Lazio, and to top it off they are now nine points behind leaders Juventus.
Spalletti said: "I don't agree with those who say Juve played badly against Lazio in the Coppa Italia.
"We warn any of my players who undervalue them. If we don't give our best, we will get beat."
Goalkeeper Morgan De Sanctis echoed the thoughts of his coach saying he sees a tough task ahead.
"I hear people saying Juve are facing difficulties and that they are in crisis," said the custodian. "But I don't think so.
"At the moment I think they are less strong than Milan but still able to do big things in the league.
"For us it will be really difficult."
