The agent of Jorginho says he has taken his game to a new level at Chelsea.
The Brazilian-born Italy midfielder joined the Blues for a fee of around £50million last summer from Napoli.
Jorginho helped Chelsea end Manchester City's unbeaten record at the weekend.
His agent, Joao Santos, told ESPN Brasil: "He's grown a lot based on Sarri's gameplay, which he played in 4-3-3.
"He's always made that one that comes out to the game and fits right in. There's a very good line between them because of it all."