Despite their physical and at times heated exchanges during the Champions League clash catching the eye , David Luiz has revealed that Chelsea star Diego Costa is a good friend of his and a 'top guy . ' The former Chelsea defender scored the equaliser for the 10 men of Paris Saint-Germain to send the tie into extra-time before Thiago Silva scored late on to send the French side through . The Costa and Luiz duel was highly talked about but the Brazilian has played down the intent of their clashes . David Luiz ( right ) revealed Chelsea star Diego Costa is a good friend and called the fiery striker a 'top guy ' The duo have been involved in a number of heated exchanges over the two Champions League clashes . He said : 'It is normal , Diego is an amazing player , a top guy and we have a lot of physical [ battles ] . We are friends and were together after the match . We know each other from before . ' Luiz has also attempted to make peace with the Chelsea fans and apologised after breaking his promise of not celebrating if he was to score . ' I respect everyone here and I was very happy here , ' he added . ' I said I would n't celebrate if I scored but the emotion of the moment meant I could n't keep [ to that ] . 'The fact I do n't score many goals means it is always special for me . I am happy with my team as we showed spirit and character . ' The Brazilian has apologised for breaking his promise of not celebrating if he scored against Chelsea .
villa eliminated Chelsea out of the Champions round on away goals . David Luiz revealed that ben Costa is a friend despite their clashes . centre forward Costa was involved in a number of heated exchanges . Luiz revealed Costa is ' top scorer ' and broke down the physical battle . Click here for all the latest Chelsea news .