PSG beat Saint-Etienne 4-0 at the Parc des Princes on Friday to extend a ideal start to the 2018-19 Ligue 1 season under their new head coach.
"But he didn't sleep well and when I asked him if he was ok in the morning he replied that he "didn't know".
Saint-Etienne missed a string of early chances and their coach Jean-Louis Gasset felt a four-goal defeat was a harsh result.
The Reds host the Ligue 1 title holders in a crunch Champions League encounter on Tuesday night (8pm).
"Paris has the players and the coach to do something there [at Anfield]", Al-Khelaifi told Telefoot.More news: Packers square up against Vikings on Sunday, Aaron Rodgers expected to play
Brazil superstar Neymar and World Cup victor Kylian Mbappe watched from the stands as PSG provided flawless preparation for the Champions League opener at Anfield, but the result somewhat flattered the hosts after a shaky first 45 minutes.
He later said he had no regrets and insisted he would do it again, and the consequences are that he will sit out a trio of Ligue 1 matches for Thomas Tuchel's side.
PSG's second goal arrived just after half-time, with Cavani converting a penalty, his third goal in as many games this season, after he had been chopped down in the box by Loic Perrin.
Speaking in the mixed zone at Parc des Princes after the match, midfielder Marco Verratti expressed his happiness at being back on the pitch and teeing Draxler up for his goal, while the Italy worldwide also admitted that he regrets the red card that will keep him out of next week's Liverpool clash. "It will be a big test for us, but we are confident". Unfortunately, we did not manage to score.
"We must respect this opponent who is a great team, but I think we can do something". "There we saw the difference of class". "Liverpool will reveal something but most importantly it will give us a better idea of our situation".