“We would like to thank Alain for his graft at the club, and his place in the hearts of Parisians both (in six years) as a player and nine years an administrator,” PSG said in a statement.
“Alain truly marked a historic period at the club, and he showed his loyalty by sticking with us and defending our colours through the tough times.”
Roche, 44, represented PSG from 1992-1998 during a playing career that included spells at Valencia, Bordeaux, Marseille and Auxerre.
After his retirement in 2002 he returned to the club in an administrative role, rising to director of player recruitment in 2006.
His role had been somewhat marginalised since Leonardo joined the club as a director of football, and he has now been allowed to leave the club.
“It’s the end of a love affair but I have to say that I experienced some wonderful moments at the club and I will remain a fan of PSG,” Roche said.
“I wish the club all the best for the future.”