Napoli president Aurelio de Laurentiis has blasted his players after their Coppa Italia defeat to Lazio.

Senad Lulic struck the only goal of the semifinal to fire Lazio into the final.

"We have a commitment with the Azzurri fans, who are quite right to be unhappy," De Laurentiis told Sportitalia.

"From today until the end of the season if we don't change course and the players are incapable of honouring the jersey on their back, then they are going into a training retreat.

"I hope all of this will serve as a turning point to spark some pride. We have put in some squalid performances that are unworthy of Napoli.

"From today we change tack. We need a training session for the mind, more respect for the fans, the club, the Coach and for themselves."