The iconic trainer thinks that the former Bordeaux and France boss would be a a good replacement should the current Italian incumbent depart in the summer
Speculation linking the Italian coach with a move away from Parc des Princes - and, in particular, to Real Madrid - has been growing in recent weeks and the former Ligue 1 winner believes the ex-France head coach would make an ideal appointment.
"Carlo Ancelotti has met the minimum requirements if he is judged by value for money. In two championships he has won one," the 74-year-old told Le Parisien.
"He hasn't performed in the domestic cups and in the Champions League they were knocked out by a team which lost 7-0 in the next round."
The Frenchman thinks that Blanc's track record with Bordeaux and France makes him a superior candidate for the job than the current Italian in charge at the Ligue 1 leaders.
"With [his assistant] Jean-Louis Gasset he has formed excellent teams," Roux continued. "It would entice me to see the pair at PSG. They know football very well.
"Blanc was the champion of France with Bordeaux and his Bleus side were eliminated in the quarter-finals of the World Cup in 2012 to the eventual winners. France lost against a good Spanish team who have not lost a game since. With France, there was just malicious gossip from people who wanted to put someone else in his place.
"With Paris Saint-Germain there is no need for technical training. This job is just psychological work to solve human problems, bind the team together and of course implement tactics. All of that he can do."
Les Parisiens are on the cusp of their first domestic title since 1994 but must beat Olympique Lyonnais on Sunday to seal the truimph.