Former Juventus sports director Luciano Moggi has blamed Inter Milan's Serie A wobble on coach Jose Mourinho.
The Giallorossi leapfrogged over Inter Milan after victory against Atalanta on Sunday.
Moggi said: "Inter are always the strongest team of this mediocre championship.
"They demonstrated it against Fiorentina in the second half. But the Nerazzurri are paying for Mourinho's paranoia about presumed plots, and that has ended up transmitting insecurity within the Inter camp.
"Then there are players like Julio Cesar and Chivu, to mention just two, who are not performing anywhere near their best."