David Luiz confident that he will play next match
The Brazil defender believes that a back injury won't stop him from taking part in his side's World Cup quarter final.
Luiz was fit enough to to play the whole match as Brazil beat Chile on penalties, and the PSG player paid tribute to the national team's medical staff after the game.
He said: "I hope to be 120%. Thank God I am in the hands of capable people with great quality that can help me."