The club's former director Jean-Michel Moutier has criticized PSG's transfer business so far this summer and feels the team lacks the quality to win the Champions League.
The Parc des Princes outfit spent big to lure David Luiz away from Chelsea at the start of the summer transfer window, but was then forced to pull out of the race to sign Di Maria due to financial concerns, with the Argentine now set to leave Real Madrid for Manchester United.
Moutier says PSG's transfer policy has been questionable this summer and feels the team's chances in Europe may suffer because of it.
MORE: Alex Morgan upset at 159-degree temps | Transfer photos
"They say that PSG have had a successful transfer market so far if you bear Financial Fair Play in mind, but I'm still convinced that they spent their 60 million euro transfer kitty rather quickly on David Luiz," Moutier told Le Parisien. "I wonder whether they would have been better off waiting for a bit and then signing Di Maria instead.
"I am also skeptical that David Luiz really is a defender. It's telling that Jose Mourinho and Rafa Benitez played him in midfield at Chelsea. I think the signing of David Luiz and Serge Aurier is enough for them to win the Ligue 1 title again, but it will not get them to the Champions League final."
Paris Saint-Germain currently sits sixth in Ligue 1 with five points from three games.