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Yes, it's not a big deal if it happens in Ligue 1, because the draw they received in Ligue 1 has no effect on them in the standings. Their points are far from the other teams and that makes them comfortable when they draw only once. But it will be a different story if it happens in the Champions League, because when they get this result in the first leg and play at home it will be a threat to them because in the second leg they will be more dificult to win.
In the first leg of the Champions League, they won 2-0 against Real Sociedad, it opened their chances of qualifying from the round of 16 to the quarter-finals. But they also still have to be careful because it could be that Real Sociedad can turn things around in the second leg later when they play at their own headquarters. Paris Saint Germain must prepare for it all, because if they make a mistake then they will feel something bad or be eliminated from the Champions League early. They must play as usual, because mentally they will certainly be better after their advantage in this first leg.
PSG didn't have much problem facing Real Sociedad in the second leg after they had 2 goals in hand. Luis Enrique is a coach who can be relied on enough to win matches against these La Liga representatives, so I think you can put your trust in him because PSG's journey in the Champions League this season looks good to qualify for the quarter-finals.
PSG is not thinking much about Ligue 1 as they lead the standings with a large points gap. This can provide many benefits for PSG because they can really focus on the Champions League. I would doubt PSG in the quarter-finals if they met teams like Manchester City or Real Madrid, but the match will definitely be tough for them if they meet other strong teams like Arsenal and Inter.