Chelsea have signed defender Benoit Badiashile from AS Monaco on a seven-and-a-half-year contract.
The central defender, who made his senior debut for France in September against Austria, has joined Chelsea on a reported £35m deal.
"I'm very happy to be here at Chelsea. I'm so excited to start playing for this club," said Badiashile.
"I can't wait to see the fans and start playing in the best league in the world."
The Frenchman has featured in the Champions League and Europa League for Monaco, making almost 150 appearances in all competitions.
"We're delighted to welcome Benoit to Chelsea," said Blues chairman Todd Boehly.