The club currently sits 16th in the league table, dangerously close to the drop.
Simultaneous departures of Gravina, Buffon, and Gattuso mark a significant turning point for Italian football.
English football clubs paid a combined £547.8 million to agents over the past year, according to FA figures.
The charge follows his dismissal during Manchester United PL clash with Bournemouth on the 20th March.
The incident saw both coaches leave their respective technical areas and engage in a physical confrontation following a foul near the touchline.