The targets for the Blues coach are AC Milan duo Alessio Romagnoli, 23, and Mattia Caldara, 24.
They face an uphill task persuading the Rossoneri to part with Romagnoli who is captaining the side this season. The left-footed centre-back is seen as the heir to the greats of Milan sides from yesteryears, such as Baresi and Maldini.
Chelsea was previously linked with Romagnoli in summer 2017, with then-head coach Antonio Conte keen on the central defender. Like so many of the Blues ventures to Italy in search of players to strengthen their back four, it ended in disappointment. Sarri hopes this time will be different.
Caldara, meanwhile, is an even more improbable target after moving to the San Siro this summer from Juventus. He was a makeweight in a deal which saw Leonardo Bonucci return to Turin after a season with Milan.
Despite being kept out the Milan side by Argentina international Mateo Musacchio, 28, Caldara is a current Italy international, away with Roberto Mancini’s squad for UEFA Nations League matches, having made his debut during the 3 – 1 defeat to France before the 2018 World Cup finals began.