Milan Vice-President Adriano Galliani is upset that Italy Coach Cesare Prandelli has backed Napoli to win the Scudetto this season.
Prandelli expressed his admiration for Napoli's season during a radio broadcast on Tuesday and said that he will be supporting their title challenge.
His comments have upset the Milan camp who feel he should remain impartial.
Prandelli's predecessor Marcello Lippi angered the then Inter Coach Jose Mourinho when he told reporters that Juventus would win the Scudetto last season.
Il Corriere dello Sport understands Galliani has telephoned Prandelli's boss Giancarlo Abete, the President of the FIGC, to register his unhappiness.