Liverpool midfielder Lucas Leiva isn't surprised by David Luiz's success at Chelsea.
Lucas believes the current crop of South American players in the Premier League are helping to dispel the myth that they are unable to adapt to English football, with 23-year-old defender Luiz having started so well.
"I've known David since I was maybe 19 years old and we used to play for the Under-20s together," he said. "I am not surprised [with his impact]. I am really, really happy with the way he has arrived because I know how difficult it is to adapt in the Premier League.
"But he is already scoring a lot of goals and maybe people were not expecting this. And they have been important goals as well so I am happy with the way he is playing."
