Meanwhile, the differences between Sarri and Conte's tactics could also present something of a logistical problem for Chelsea, with the new manager preferring to play with a back four rather than Conte's famous back 3.
The 59-year-old was appointed Blues boss on Saturday, succeeding compatriot Antonio Conte, who was sacked 24 hours earlier.
Sarri gave his assessment of Jorginho, who joined Chelsea after the London club fended off competition from City for his signature, and he was glowing in his account of the Italian midfielder's capabilities.
We only have three weeks before the transfer window closes and it will be a busy time for the Blues as we look to prepare for a proper challenge for the Premier League title.
Asked about the skillset Jorginho will bring to Chelsea's midfield, Sarri told the club's official website: 'Jorginho is not a physical player, he is a technical player.
The Italy worldwide will wear No 5 at Chelsea and fans will have their first chance to see him in action when they play Perth Glory in a friendly in Australia on July 23.
Conte won the 2016-17 Premier League title with Chelsea in his first season as head coach and signed an improved contract, but not an extension to the deal which was due to expire in June 2019. "It is an exciting new period in my career", Sarri said.
Antonio Conte was magnanimous about his time at Chelsea and made no reference to any ill-feeling in a statement issued by the League Managers' Association following his sacking.
Sarri becomes Chelsea's 13th permanent boss of Roman Abramovich's ownership, which began in June 2003.
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Man City are not particularly happy about the manner in which Chelsea stole in to snatch Jorginho from Napoli right beneath their noses. "And probably I want also to win something".
His first game in charge will be in the friendly with A-League side Perth Glory at Optus Stadium in Perth on July 23. "I was lucky to transport my idea of football onto the pitch, with the quality of these players", he said in quotes carried by the Daily Mail.