David Luiz 'not a defender' - Leboeuf
Former France international Frank Leboeuf has told David Luiz he must work on keeping his concentration if he is to succeed at Paris Saint-Germain and advised him to draw on coach Laurent Blanc's own experience.
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The Brazil international has a Champions League and Europa League winners' medal to his name, and has more than 40 caps for his country, but is known for infrequent lapses during games.
Fellow former Chelsea centre-back Leboeuf told RMC Luiz still has significant room for improvement, but believes PSG boss Blanc -- the man Leboeuf replaced in the 1998 World Cup final -- can help the capital club's new recruit flourish.
"He's a great player, but he's not a central defender because he forgets a huge amount of things," Leboeuf said. "It's up to him to work and be focused.
"He is fortunate to have a coach who was a defender and who can help him. He's going to have to work because he only thinks about going forward and that creates gaps at the back.
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"When he played in midfield with Chelsea, I thought he was very good. He gets through an extraordinary amount of work.
"I'm critical of him because when he plays at the back, he doesn't think like a central defender. He goes beyond his pay grade, because he only goes forward."