For the next match of the PSG, Lille will maybe put a defense at 5 players, like Marseille or Nancy, in order to prevent Paris from scoring. We'll need to take a closer look to that !
A best way is not defense but must ofense, I think before total defense, Lille will make a goal to increase confidence. After lead a goal I sure PSG willl get difficult to come back. I hope any surpise in this match.
A coach of weak team wont take a risk to use offensive strategy when playing against stronger team, especially PSG that have good counter attacking. So, I agree with what Marquinhos said, I think Lille will use defensive formation to get point from this match.