Until that time, Antonio Conte remains manager and has asked players to return for pre-season training that same day, part of his latest reported disagreement with the club.
Antonio Conte's side did end last season on a high with their triumph in the FA Cup final against Man Utd, but after finishing fifth in the Premier League, they would undoubtedly have hoped for new faces to strengthen the squad.
While, Chelsea's loan players having already spent a week under coaches Eddie Newton and Tore Andre Flo at Cobham Training Centre.
"I have to apologise to Khaldoon (Al Mubarak, the Manchester City chairman), because I closed a deal with him 15 days ago, but Jorginho would prefer to live in London than Manchester, I can understand that and especially if Chelsea pay him more".
Before joining Chelsea, Conte had only coached in his native Italy, leading Juventus to three consecutive Serie A titles from 2012-14 before taking over the national team at Euro 2016.
George Clooney hospitalized after motorcycle crash in Italy
According to Carabinieri officer Alberto Cicognani, the driver of the Mercedes hit Clooney after failing to stop at a turn. A spokesman for the actor told the Press Association: " George Clooney was treated and released from an Olbia hospital".
It seems that a resolution is close now, however, with Napoli president Aurelio De Laurentiis today confirming that the two clubs are close to hammering out an agreement.
Sarri, meanwhile, has given a list of his own preferred targets to Chelsea.
Conte is also holding out for his £9m and intends to work his previous year of his contract unless he gets it, having not had any concrete offers from other clubs and after turning down Italy's interest in re-appointing him.
Meanwhile, sources close to the club have told ESPN FC that Chelsea are set to hand highly rated midfielder Mason Mount a new deal before sending him on loan to Derby.
Juventus' recent dominance of the Italian top flight was nearly ended by Sarri's swashbuckling Napoli side last season.
It was a great contrast to his first year in England, when he took Chelsea from a tenth place finish the previous season, to the title in dominant fashion.