David Luiz: I have matured since joining Chelsea

Chelsea defender David Luiz believes that he has developed into a better player since leaving Benfica for the Blues in January 2011.

The centre-back feels that his new surroundings have helped him mature, but stressed that his character has not changed.

"I moved to another league, to another challenge in another country, so I am older, more responsible and wiser, but the character and the professionalism is still the same," the Brazil international said during a press conference.

The 24-year-old then looked ahead to Tuesday's Champions League quarter-final clash against his former team, and stressed that he is determined to help Chelsea to a good result.

"I am pleased to return to a place where I was very happy, but the past doesn't matter now. People know the love I have for Benfica; I will always love this club but I am a professional and will do my job to help my team.

"It will be a great match played by two great teams. I will meet my friends and that's the way it's going to stay until kick-off, but after that each of them will do their own work."