Schick, 21, enjoyed a fine first season in Italy, scoring 11 league goals to help Sampdoria finish 10th in the table.
The Czech Republic international, who has a reported €25million release clause, has also been linked to numerous other clubs.
"I cannot say anything. Everything is under negotiation," Schick told Czech site iSport.
Asked about Juventus, he responded: "It is possible there is an agreement before the match with Norway [on Saturday], but it's hard to say.
"Everything is under negotiation. There are still other options. I don't know, there's still nothing definitive."
Juve vice-chairman Pavel Nedved recently talked up Schick, comparing him to Manchester United star Zlatan Ibrahimovic.