[Edited out]
Injury hit PSG's team so early, it's so sad that both of their key players are injured, this might not really affect them in the league since they have backup that can withstand other teams in the Ligue 1 but where it would have affected them most is if those players doesn't return before the Champions League tournament begins which is possible since the players were sidelined for 4 weeks and 6 weeks to be out and by then they would have played their first game in the champions League, PSG will find it hard but they have a young team it is now left for the manager to do his best to ensure he doesn't miss out in the competition.
It's even better for PSG as their own injuries started early enough (Even though it is not a guarantee that there would be no injuries later in the season) but I believe that it will allow PSG to prepare better for the season against all odds. Most of their current injured players will return between now and October. So if they can manage to get through their first few matches in the champions League, they would have chance to go through the champions league like nothing happened when they finally return in October. Ousman Dembele and Doue seems to be the most critical but would still return by October. For the league, they still have nothing to fear much, their bench is still capable.