Christian Pulisic says he has to prove himself to Chelsea manager Frank Lampard.

The 21-year-old, signed from Borussia Dortmund in the summer, has been used sporadically by the Blues boss this season.

And the American knows reputation alone won't convince Lampard to give him playing time.

Speaking to the Players' Tribune, the winger said "If you can play, you can play and that's why Dortmund was amazing for me, the coach always trusted me. But you've got to prove yourself maybe that extra mile.

"I have to prove myself no matter what age I am.

"I don't feel like I'm some wonder boy anymore, I've been around and I think I've earned that respect at least and I'm in a new chapter and I'm going to prove myself."