The midfielder has been heavily linked to a move to Atletico Madrid, while Inter are reportedly interested in bringing him back to San Siro.
The 32-year-old has hinted at his unhappiness at Parc des Princes for several months, and he has revealed that he plans to bring an end to his three-year spell in the French capital.
""It's time to start a new cycle," he told La Gazzetta dello Sport.
"There is no way I will stay at PSG. I've already told Laurent Blanc that I want to leave."
The Brazil-born Italy international, who has won eight trophies at PSG, including three Ligue 1 titles, is out of contract next summer.