There's no cause for alarm in Ligue 1 because even if these two players are absent throughout this season, PSG will definitely win the title again. In UCL, it will definitely affect the team performance because they will be playing with teams with the same qualities with theirs. I am not expecting much from PSG this season though.
Well I want to believe you are trusting the abilities and strategic tactics of Enrique because ifbyou do not you will not be sounding like this but again you have to be sure that you will not get disappointed because PSG to a good extent has got some dependency on these two and for vital games like the champions league where the competition is peaked, I only hope they are lucky or Enrique has got a perfect rotational strategy to fit in for their absence if not it will be evident how challenging it will be for PSG to get decent wins.