Chelsea have named Mauricio Pochettino as new manager.
The Argentine has signed a contract until the summer of 2025 with an option for another year.
Pochettino, who has a long history at Tottenham, was last at Paris Saint-Germain - where he was sacked a year ago.
"Mauricio's experience, excellence, leadership and character will serve Chelsea well as we move forward," directors Laurence Stewart and Paul Winstanley told the club's website.
"He is a winning coach, who has worked at the highest levels, in several leagues and languages. His ethos, tactical approach and commitment to development made him the exceptional candidate."
Jesus Perez, Miguel d'Agostino, Toni Jimenez and Sebastiano Pochettino will join the new manager's coaching staff.