Lavezzi won’t stay at PSG after this season, that’s a certainty. His contract will end next June and after a reunion between his agent and the club in February 2015 (a year ago) Lavezzi knows PSG won’t be offering him a new contract.
During the January transfer window, Inter and Chelsea approached his agent to try and sign Lavezzi, per Le 10 Sport, and the deal would have been possible if PSG had released him of his contract with 6 months to go, but they decided not to sell as they knew they might not be able to find a replacement on a such short notice.