Chelsea defender Andreas Christensen has signed a new four-and-a-half-year contract at Stamford Bridge.
Since returning from German club Borussia Monchengladbach, where he spent two seasons on loan, the 21-year-old has established himself in Chelsea's three-man defence at the expense of David Luiz.
The new deal will keep the Denmark international - who has made 22 appearances so far this season - until 2022, after initially signing with the Blues in 2012.
"It feels really good to sign a new contract and I'm just happy to be committed to Chelsea for the future," Christensen told the club website.
"I've played a lot of games, I'm enjoying it at the club and everything is working well."
Chelsea director Marina Granovskaia added: “This contract is reward for the excellent form Andreas has shown in the first half of the season,
“He showed immense potential when he signed for Chelsea in 2012 and is now enjoying the benefits of the dedication and professionalism he has shown since.
“After two seasons on loan in Germany we were convinced he was ready to be a part of the squad this season and he has grasped the opportunity with both hands.
“We are delighted he has chosen to commit his future to Chelsea and we look forward to four-and-a-half more successful years with Andreas at the club.”