PSG chief Leonardo says Barcelona are yet to meet their price for Neymar.
There is still time for a deal to be closed before the window shuts on Monday, however.
Leonardo says: "The negotiations aren't dead but there is no agreement because our requests haven't been accepted.
"We are open to talk about players, but there is no agreement.
"The position of PSG and Neymar has always been clear, if a satisfactory offer arrived then he could leave, but that is not the case."
When pressed on the likelihood of a deal coming before the deadline, the Brazilian was non-committal.
"The deadline is Monday at midnight, we haven't set any time limit other than the natural one."