The wantaway PSG star is desperate to return to Barca before the summer market shuts on September 2.
Asked about the situation, Pique said: "Of course we have conversations with him, but they are private.
"It's a complicated operation.
"The squad we have now is important enough to fight for all the titles. If the opportunity arises, I would be happy to have him here.
"The players can have a personal opinion but it doesn't change anything."