You are setting it up to be able to say 'I told you so' when Barca dont play Puig and dont play like today but the reality is PSG will be a different side with a different set up and to play like today most likely will not even completely be in Barcas hands.
This. Puig will perform very well against any side like Alaves (giving him tons of space and time to make a decision) but it's a totally different match vs teams who close down fast, are physical, and fast. To be fair though, Puig played very well vs Atletico Madrid last season.
The problem with PSG is we may have very limited possession, which essentially makes Puig a lot less capable.