If Chelsea defends more like park the bus against PSG, it'll be tough for the Champions of Europe to get a goal quickly, but if they try to play their normal game that brought them to this stage, they'll be fvcked hard in the butthole during the first 30 minutes of the game. I'm not hating, I'm not underestimating nobody, it should be a 1:0 win for PSG, possibly a 2:0. The signs are all over. Talks of Chelsea being underdogs and winning are not relevant in this game.
Personally, I think going all out to defend might even be the worst thing to do against PSG in a high profile match like this because they will definitely break that defence. It's simple, they have the players to unlock any defensive structure. If you defend, you're only giving them multiple options to come at you from every angle and you know they have quality players in the flanks to do the job. Even their LB and RB are terror on their own in the flanks. It's better Chelsea comes out and play their normal game so it will be balanced.