~~~
From look of things those four have to work very hard to avoid the relegation zone and the funny part is that only one of them will escape the zone but I can really mention because the point between them are so close like Verona and Cagliari are having the same points 14, 14 what really make Verona ahead of Cagliari is because of number of goals conceded which is the only advantage for them while Empoli has 13 points and Salernitana who is the last in the table has 12 points, now it going to be hard to even predict the teams that will be relegating because all the four teams still have have hope of surviving the relegation zone.
All the teams you mentioned that are in the relegation zone are likely to have difficulty surviving in Serie A next season. They still have the opportunity to improve their performance, but considering the team's poor performance, it is very likely that they will be relegated.
One of Empoli and Verona can be expected to stay in Serie A next season, but I truly believe that Salernitana and Cagliari will be relegated. It's been a bad season for them, but there are the next 18 games that will decide their respective fates. Milan, Inter and Juventus are 3 good teams in the title race, but Milan is still too far away to be considered the main favorite compared to Inter and Juventus.