David Luiz has apologised to Chelsea after celebrating his goal for Paris St-Germain that helped knock his former side out of the Champions League. Luiz scored an 86th-minute header to send the last-16 tie in to extra time. “I’m sorry for the emotion I showed,” said the defender, 27. “It was difficult because I was so happy to win, but I was also happy at Chelsea.” PSG progressed to the quarter-finals on away goals after the second leg finished 2-2 and 3-3 on aggregate. Brazil international Luiz made 143 appearances in all competitions for Chelsea and scored 12 goals before moving to Paris for a reported £40m last June. He said: “I said before I wouldn’t celebrate but there was so much emotion, I couldn’t control it. I am so happy to qualify. “All the supporters and every single person in the club tried to help me from my first day at Chelsea to the last day.”