Chelsea have announced on their official website that Kylian Hazard has joined the club's development squad.
The 22-year-old, brother of Eden, was convinced by his brother to make a move to Stamford Bridge.
"My brother needed a new challenge," Eden Hazard said.
"I told him: 'Come to Chelsea. Maybe the manager can do something for you'."
A statement on Chelsea's official website reads: "The 22-year-old, a younger brother of Eden, is an attacking midfielder who started his professional career in his native Belgium, first with White Star Brussels and then Zulte-Waregem.
"He joined Ujpest in the summer of 2015 and played 42 times for them.
Chelsea's development squad is next in action at home to Sunderland on Saturday 9 September."
