However, the Serie A side refused to release the 59-year-old from his contract and stood firm over negotiations with Chelsea.
Since the season came to a close Chelsea's current incumbent Conte has been linked with a number of managerial vacancies, however nothing ever materialised on this front, and he now looks set to receive a sizeable £9m in compensation from the Blues.
He will replace Antonio Conte in the Stamford Bridge dugout.
Sarri has been mightily impressive with Napoli since his arrival, with the Italian helping the the club very almost win Serie A this season, however they fell just short to eventually champions Juventus by a few points.
Paul Pogba expresses his delight after reaching the World Cup final
In St Petersburg, ecstatic French fans sang their way out of the stadium, relishing the prospect of a final against England or Croatia.
Chelsea are yet to announce the departure of Antonio Conte who won the FA Cup title last season, and this must be done before a new man will be announced as his replacement.
They have also spoken to the Italian about potential transfer targets.
Earlier, NAIJ.com had reported how incoming Chelsea manager Maurizio Sarri reportedly informed the Blues chiefs to make Argentina worldwide Gonzalo Higuain their first signing.
As reported by the Daily Mail, Sarri will begin his time at the club by actually living at the training ground in Cobham.