I have a bold prediction that Napoli next season won't even be in Top 4. I expect them to lose a lot of points in begining of the season. Everyone will play with more fire against them since they are champions and with possible departures of key players I see that happening.
Some key players will leave the club, but we don't know whether they will stay or accept offers from elite clubs. Napoli's performance next season will be outstanding: they are the defending scudetto champions and will do all to retain their standard; even if they do not win the scudetto, qualifying for the UCL will be a breeze. Napoli's manager, Luciano Spalleti, leaves the club due to personal reasons intends to spend more time with his family after breaking a string of difficult milestones for the club, Napoli was crowned Seria A champions after 33 years.