Chelsea boss Frank Lampard has declared the development of Fikayo Tomori as "huge".
Tomori only made his full debut for Chelsea in the draw against Sheffield United at the end of August, but since then his stock has soared.
"He's quite quiet with me, but not quiet when they're all together and you look from a distance!" said Lampard.
"He's definitely got personality. That grew last year at Derby. He became very popular in the dressing room, and popular with the fans for his performances.
"The progression is huge, but the main thing I saw in him was work ethic. He quietly goes about his business. He trains hard. Everything you ask him to do, he tries to do it and more. Physically he's great, we know that. He's one of those when you're doing sprinting or running, or heavy running early season, you can see every day he's nailed, he does the job.
"When you want to do a particular training session, something quite simple but which takes a bit of focus, he's focused and ready to go. That has shown in his performances since he stepped into the team. I put trust him early in the season, and at the moment he's really delivered. Long may that continue, because there is more to come from him."
