Napoli president Aurelio De Laurentiis is not happy about his former coach's new job and claims it was impossible to stop him leaving the Stadio San Paolo for Inter
The 51-year-old ended a four-year spell at the Partenopei this month having led them to second in Serie A and, on Friday, he was confirmed as the new Inter coach in place of the sacked Andrea Stramaccioni.
The Stadio San Paolo chief claims Mazzarri was being unfaithful by leaving the Neapolitan club, though he does insist he remains fond of the new Nerazzurri boss.
"The marriage was split in two," he told reporters on Saturday."You can use money to convince a wife to stay with you but if the wife wants to sleep with another man, then she will sleep with another man.
"Mazzarri is a great coach, is a very nice man, we have had four happy years, it was nice to work with him but the project continues."
Rafa Benitez is favourite to take over at Napoli, having led Chelsea - who are set to end his temporary reign by re-hiring Jose Mourinho - to Europa League success this season.