David Luiz has challenged the Chelsea youngsters to earn their place in the first-team this season.
With a transfer ban in place, new manager Frank Lampard is expected to test the club's young stars int the first-team this season.
And Luiz says it is up to them to make sure they grasp the opportunity.
Luiz said: "I think when you're young you have to think about you opening the door not the door opening for you. The young players have to work in this mentality. Because life is not easy.
"Every day another boy is born and another boy wants to be a footballer. And it's up to everybody to work hard and for them to knock on the door and open the door the have the talent for that they have the potential for that, they just have to show that every single day."
