It is something that has caused somewhat of a headache for Mourinho, who - despite insisting that the Brazilian is "one of the best central defenders in the world" - has opted several times now to use the 26-year-old in midfield. The benefits are obvious, a technically-assured player who can provide defensive cover and release more creative players to do what they do best - think Claude Makelele with Brian May's hair - but there is a feeling that playing Luiz in midfield is a cop-out... A statement of doubt in his concentration and positioning, most (in)famously distilled into one sentence when Gary Neville said the Chelsea man played like a Playstation character being controlled by a child.
But does Luiz care? Not a jot. Where does he want to play? Well, just about anywhere he can, really...
"I want to play football and I want to help the team. It doesn't matter if I play midfield, if I play in defence, if I play as a striker.