Kylian Hazard has joined his older brother Eden Hazard at Chelsea as part of the club's development squad after signing from Hungarian side Ujpest.
The 22-year-old attacking midfielder becomes the third member of the Hazard clan to spend time in West London, following in the steps of Eden and Thorgan Hazard.
Kylian, who made 42 appearances for Ujpest upon joining in 2015, will initially link up with the Blues' Under-23s side and then battle for a place in the first-team squad.
"Kylian Hazard has today signed for Chelsea from Hungarian side Ujpest, and will join our development squad," a club statement confirmed.
Chelsea's development side, currently sixth in the Premier League 2 Division 1 table, return to action on September 9 with a home match against Sunderland.