Tthe 27-year-old has been one of Juve's outstanding performers this season, making 30 goalscoring contributions in 40 appearances under Maurizio Sarri.
“We've been talking to his agent for a while now, he's a very important player for us," Paratici told DAZN.
“We made a very big investment for him. It was a gamble by the club but one we always believed in.
"We even gave him our No 10 shirt. We've always had faith in Paulo."