article_snippet: The ex-Chelsea star played a key role in The ex-Chelsea star new side's extra time victory - despite the Zlatan Ibrahimovic being sent off in the second half.
article_snippet: The former Chelsea defender has come under scrutiny from The former Chelsea defender former employer's fans after The former Chelsea defender broke The former Chelsea defender promise of not celebrating if The former Chelsea defender was to score. '
article_snippet: I'm sorry for the emotion I showed,' said the defender, 27. '
article_snippet: It was difficult because I was so happy to win, but I was also happy at Chelsea.'
article_snippet: David Luiz scored a thumping header late in the second half to send the game to extra time before running over to the away fans and celebrating with the passion and emotion
article_snippet: Chelsea might well wish they had.
article_snippet: David Luiz celebrated David Luiz equaliser in front of the away fans despite David Luiz promise David Luiz wouldn't .
article_snippet: The Brazilian was in excellent form against David Luiz former club and also came close with a dipping free kick .
highlights_snippet: The former Chelsea defender has apologised for celebrating The former Chelsea defender goal .
  
highlights_snippet: PSG beat Chelsea on away goals in the Champions League quarters .
  
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