PSG are weighing up cashing in on Marco Verratti this summer.
France Football says his form slide in the second-half of last season and critical comments from his camp has PSG directors considering selling the Italy international.
Verratti's agent, Mino Raiola, is in contact with Europe's major clubs, with Barcelona, Manchester United and Juventus having all asked to be kept up to speed on the midfielder's situation.
Any move, however, will require a bid of at least €100m to bring PSG to the table.
For his part, despite comments from his entourage, Verratti has always insisted he won't force a move away.