Michy Batshuayi is now a Chelsea player, after the Premier League club completed a €40million deal to sign the striker from Marseille on Sunday.
The Belgium international has put pen to paper on a five-year deal with the Blues.
Batshuayi becomes Antonio Conte's first signing at Stamford Bridge.
The 22-year-old was linked with Crystal Palace, after scoring 17 times in 36 appearances for Marseille last summer. But Chelsea quickly moved to get their man.
"I am delighted to sign for one of the biggest clubs in Europe and embark on the next chapter in my career," he said upon his arrival.
"I hope I can help Chelsea win many trophies during my time at Stamford Bridge.
"Eden Hazard and Thibaut Courtois have told me many good things about the club, and with Antonio Conte coming in it's an exciting time to become a Chelsea player.
"This is a fantastic opportunity for myself and my family, I am looking forward to playing in the Premier League next season."
He is expected to join up witht the Chelsea squad for a pre-season tour of Austria and America.