The player's agent, Franklin Mala, told RAC1: "It was possible to reach an agreement as Barcelona and Nice were negotiating".
'On Tuesday, they were in France, talking about technical aspects but they already knew Seri's capabilities.
"PSG came to us three days ago and there are now applying pressure on Nice to sign him, it's insane".
Having lured Neymar away from the Nou Camp for a world record £198million, Barcelona boss Ernesto Valverde will be understandably frustrated with PSG if they were to succeed in their pursuit of Seri. Now PSG is putting pressure on the club to take the player, it's insane.
It is understood that while Seri's agreement allowed him to join a club outside France for €40m, that did not apply for any domestic move and PSG therefore made a decision to offer substantially more.
PSG and Barca have been at loggerheads during the transfer window. "They just want to do it to fuck Barça".
Barca were also keen to sign their sign midfielder Marco Verratti but the French club refused to do business. In response, Nice informed Barcelona that their asking price had now increased to €50m, causing them to withdraw their interest on Wednesday.