Djourou's agent has confirmed he could "play in Italy or Spain" next season, as there are a "series of meetings" with Serie A sides lined up.
"Can Djourou join Napoli? It's certainly possible, especially as we will be in Italy next week for a series of appointments," agent Flavio Ferraria told Radio Crc.
"At the moment Napoli are not on the list of appointments, but everything is possible. If the lad leaves the Premier League, then he will play in Italy or Spain.
"I saw my client the other day and he was enthusiastic about both Napoli and Italy in general. So far we have received an offer worth 10m, but it is up for negotiation.
"The lad wants to play for one of the top five Italian clubs."