The Chelsea players have been informed about the decision and were given the afternoon off from pre-season training on Thursday.
Chelsea have terminated the contract of their manager Antonio Conte.
Jorginho is close to completing a move to Chelsea thus snubbing Manchester City's interest, Napoli president Aurelio De Laurentiis confirmed. However, the club finished fifth a year ago and there were rampant rumours that the Italian was going to leave.
He tweeted: "Despite reports in Italy, Fabregas is not interested in a move to Napoli as any part of the deal to take Sarri and Jorginho to Chelsea".
"My agreement with (Chelsea owner Roman) Abramovich (on Jorginho) is irrespective of whether or not Sarri ends up taking charge of the Blues".
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Alongside a smiling picture of the duo clutching the Premier League trophy, the former Chelsea captain wrote: 'Thank You Boss.
But Goal understands that Conte now no longer in charge at Stamford Bridge, and that he wants a £9 million ($12m) severance package as compensation.
"It wasn't easy to convince you in the beginning but in the end I hope I did you proud!" The Italian wanted greater say over recruitment, and would have sought a radical overhaul of the playing squad this summer following last term's disappointing fifth-place finish.
Sarri's expected arrival is also expected to see him bring Napoli midfielder Jorginho to the club, with the Blues shaking off interest from Manchester City and Pep Guardiola.
Sarri is believed to have agreed to bring former Chelsea favourite Gianfranco Zola - whose managerial career has stalled after a series of failures - along as one of his backroom staff.