Lorenzo Insigne warned Maurizio Sarri that joining Juventus would represent a betrayal of Napoli, where the Chelsea boss was in charge for three years.
Sarri s future is the subject of speculation amid reports he could take the head coach role at Juventus, vacated at the end of 2018-19 by Massimiliano Allegri.
But Insigne urged his former boss to remember that he guided Napoli to three consecutive top-three finishes in Serie A during his time at the helm and in doing so etched his name into the club s history.
It s speculation that gives me displeasure, Insigne told a news conference ahead of Italy s Euro 2020 qualifier against Greece.
He did so much for us players and all the Neapolitan people. He s also a professional, but him choosing Juve would hurt.
It will be a betrayal for us Neapolitans once it becomes official.
— Lorenzo Insigne (@Lor_Insigne)
Insigne, 28, has represented Napoli for his whole career and played some of his best football under Sarri.
The Italy international indicated Sarri s legacy at Napoli could be affected by a switch to the Bianconeri, saying: I m sorry to think about him sitting on the Juventus bench.
He was very important to me for many reasons. I hope he changes his mind. If he went to Juventus he would hurt us but I can t blame him. It’s his decision.
Jorginho, who played under Sarri at Napoli and then followed him to Chelsea, recently said it would be sad if the 60-year-old manager was to leave Stamford Bridge after just one season.