PSG slumped to a 2-1 defeat at the hands of Manchester City in the Champions League on Wednesday.
Kylian Mbappe scored the only goal for the visitors while Neymar and Lionel Messi failed to do much.
Former Real Madrid midfielder Rafael van der Vaart did not hold back while criticising Messi for his lack of involvement.
"Messi walks now and then," said van der Vaart as quoted by LFOTV.
"Then I think: aren’t you ashamed? Are you ashamed of your teammates? You walk in a circle and everyone passes you.
"Surely number six must tell him to do something? I’m just getting annoyed with Messi. And that’s a shame, because something like this will never be born again.
"That already started a bit with Ronald Koeman [at Barcelona]. It was actually a refusal to work, that is not normal for such a player.
"When you see Cristiano Ronaldo for example, I know they are two completely different types of players, who is fighting and wants to take the team to another level?"