Luiz told a L’Equipe journalist, via Four Four Two: “He is special for you, not for me.
“I had some great moments at Chelsea and won a lot of titles. I was very happy.
“They are having a great season, defend well and have great players but above all I know my team. We will try to score there and play like we know how.
“We will have a good game plan and implement it the best way possible to achieve a great performance. Both can still qualify.”
Luiz was a fab favourite at Chelsea but went out of favour of Jose Mourinho and was eventually sold for £50m last summer.
The Brazilian defender may not hold a strong relationship with Mourinho, but his fellow PSG team-mate Zlatan Ibrahimovic holds him at a high regard.
Ibrahimovic scored 25 Serie A goals in 35 league starts under Mourinho when the pair worked together at Inter Milan.
“I had a great experience with Jose,” Ibrahimovic told Telefoot, via Evening Standard.
“We worked together for one year at Inter. The feeling was great between us and my only regret is that we were together for only one year.”
PSG travel to Chelsea with the first leg tied at 1-1 but the Blues have a slight advantage courtesy of their away goal in France.