Neymar, 25, has been linked with a record-breaking €222m (£198m) move to Paris Saint-Germain amid reports that the Brazilian star is unhappy at having to play second fiddle to Lionel Messi at Barcelona.
Pique posted an image of himself with Neymar on Instagram over the weekend with the caption "he stays", implying that the Barcelona players had convinced the Brazilian to stay at Camp Nou.
But the centre-back back said at a press conference on 25 July that it was just his "intuition" that Neymar would not be leaving Barcelona this summer.
"My Instagram post was a gut thing. I want Neymar to stay. [It is my] personal opinion from conversations I've had with him. It's my intuition," Pique was quoted as saying by Sky Sports.
"It was nothing official, it doesn't depend on me. Only Neymar can say what will happen, but I hope he stays.
"I try to explain to Neymar, as a teammate and a friend, the situation he's in. I would say don't go to a league which, with all due respect, is not as good."
A source close to Neymar told Sky News last week that there was a "90%" chance of a transfer to PSG happening.
"Only a miracle will keep him, he really has made up his mind to leave," the source said.
"At the age of 25, he thinks it's his time to win the Ballon d'Or. He believes he can be the best player in the world at another big club."
The Brazil international signed a new five-year contract at Barcelona last October, keeping him in the Catalan capital until 2021.