The Argentine has found his game time for the Ligue 1 champions limited under the reign of Laurent Blanc and has not featured for the side since August.
Pastore has been linked with a return to Italy, but his agent Marcelo Simonian is adamant that his client is going nowhere.
"Javier is happy in Paris," Simonian told L'Equipe. "He has no nostalgia for Italy. Football goes in cycles."
Pastore joined PSG from Palermo in 2011.