~snip~
My prediction is that PSG will try to win the first leg match with a goal difference of no less than two, and the second leg will still try to win but a draw will be enough to take them to the quarter-finals. Sociedad's productivity and defense are not as good as PSG's, so PSG's chances of winning are very wide open compared to Sociedad.
Of course, making the most of the first match in Paris is a must. If possible they should make a 2-3 goal difference. It will be a little safer to hold the series in the leg 2 match in Spain. Statistically Sociedad's group matches have never lost. That means they have good statistics. Of course PSG should not underestimate. PSG must be able to take advantage of the advantages of players including Mbappe. He must be able to make Mbappe move freely to open up space for other players. In addition, it seems that there will be additional players due to the transfer season.