The Brazilian defender made a shock move back to Stamford Bridge from French giants PSG in August after two years away.
“I enjoy it a lot, I feel at home here. I was missing it a lot,” said Luiz.
“Sometimes you cannot choose everything, sometimes cycles end, sometimes they start again.
“I am happy to be here. I am working hard, because I have some business to finish.
“I hope so [to win the league], we need to work hard. I want to have this feeling.”