Chelsea must play the bus and wait for a penalty shootout 
It seems the weather will not be on their side (hotter weather would probably be to their advantage), but the rain will probably also help them defend.
PSG looks like a team without weaknesses, but who knows, maybe on Sunday there will be the same game as with Liverpool in Paris, when PSG should have won 3-0 but lost 0-1.
This PSG team isn't the type of team Chelsea should play the bus and wait for a penalty shootout because the PSG team knows how to break and penetrate their opponents defense, and if Chelsea adopts that strategy, PSG will beat Chelsea easily. Attack is the best form of defense, so I expect Chelsea to play attacking football against PSG so that all the pressure will not be on them.It seems the weather will not be on their side (hotter weather would probably be to their advantage), but the rain will probably also help them defend.
PSG looks like a team without weaknesses, but who knows, maybe on Sunday there will be the same game as with Liverpool in Paris, when PSG should have won 3-0 but lost 0-1.
It's true that psg are in a better form than Chelsea but the way most people are talking about this game it's as if they will trash Chelsea up to ten nil , forgetting that they succeeded in trashing real Madrid because real Madrid was the one that gifted them the first two goals that kills their morals entirely in that contest, so they should take away that illusion in their head that Chelsea will make it easier for this psg side by gifting them another two goals like real madrid did.