The Argentinian international has been linked with a move to Brendan Rodgers' Liverpool after a rough start to the season.
Injury and poor form have seen the former-Palermo playmaker relegated to the fringes of the PSG first-team squad.
And he's reportedly an unhappy figure in the PSG dressing room, with the report claiming that his absence against Bastia may have been down to his low morale.
Officially, Pastore was ruled out of the 4-0 victory with a thigh problem. But the Argentine has become a target for the PSG boo-boys this season, with the Parc des Princes faithful jeering him during his last outing against Guingamp back in August.
He moved to PSG in 2011 for €38m, but several reports claim he could be available on the cheap after a less-than-stellar stay in the French capital.
A figure around the £17m mark could be enough to convince PSG to part with their talented playmaker, with Liverpool on the look-out for that type of player.
Rodgers was linked with Willian before the Brazilian opted to join Chelsea over the summer. Having started the season in such fine form, the Anfield boss will be keen to carry the momentum into the New Year.