The 23-year-old, who is currently recovering from an Achilles injury, made an impression in the first team during the final few months of Maurizio Sarri's reign.

"I'm really happy and pleased that I get to stay here for another five years," Loftus-Cheek told Chelsea's official website on Saturday.

"It's the place where I've grown up playing and hopefully I'll be playing here for a lot longer."

Loftus-Cheek first joined the club as an under-eight and progressed through the youth ranks to the first team, for whom he has made 72 appearances.

An important loan spell at Crystal Palace gave the midfielder valuable top-level experience and coincided with his first full England call-up against Germany in November 2017.

"At eight or nine years old, of course you never think you'll be here for so long because you just want to enjoy yourself and play with your friends," he added.

"When I look back and see how the hard work has paid off, it's a good feeling. That only makes me want to work harder to achieve more in the future.

"I hope to win a lot more trophies with the team and personally it's just about trying to do as well as I can and work hard to be a key player for Chelsea."

The signing of Loftus-Cheek represents another significant move from new boss Frank Lampard, who has also allowed striker Alvaro Morata to leave the club on a permanent basis.

Chelsea director Marina Granovskaia said: "We see Ruben as an important part of the squad for many years to come and we are very pleased he also considers his future to be with Chelsea."

Australian Associated Press