Chelsea have beaten off competition from Manchester City to sign Italy midfielder Jorginho from Napoli for around £50m.
Just hours after confirming Maurizio Sarri as they new head coach, Chelsea confirmed that Jorginho would be following his former coach to Stamford Bridge.
The 26-year-old midfielder, capped eight times, signed a five-year deal having been heavily linked with a switch to Premier League champions Manchester City.
Jorginho told the club's official website: "I am absolutely ecstatic to be here at Chelsea. It is not easy to become part of such a big team so I am very, very happy. I am excited to play in such an intense league, for a team that gives everything to play and win."
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Director Marina Granovskaia Granovskaia added: "We are delighted Jorginho has chosen to join Chelsea. He was one of the most coveted midfielders in Europe and will become an important member of the playing squad.
"He has demonstrated his quality working under Maurizio Sarri and we are convinced his signing will help bring further success to Stamford Bridge."