Armando Broja penned a six-year contract this summer.
The 20-year-old Albanian forward spent the last season on loan at Southampton and scored nine goals in all competitions for the Saints.
This season he was appeared four times from the bench in Chelsea’s last six games.
Broja explains the reason on nailing down to a long-term contract with the Blues.
“Chelsea is one of the best clubs in the world, everyone knows that,” he said. “There’s no better feeling to be playing for my boyhood club and the club I supported my whole life.
“It is amazing to be learning from these players that I am playing with and training with every time. To work with an elite manager, it is just amazing for me as a young player to develop in such a good environment as Chelsea.
“My full focus is to be here and focus on Chelsea. Everywhere you go in football there’s competition, that’s just normal. For me, it is just about being focused, keeping my head down and working hard. Hopefully, I will get many more opportunities, but I am thankful at the moment.”