The former Manchester United junior's current deal runs to 2017, but Mino Raiola is demanding a bumper pay-hike to €4 million-a-year - double his current wages, says Corriere dello Sport.
Raiola believes Pogba is well worth the money after it was confirmed Real Madrid made enquiry for the young Frenchman this summer.
Juve coach Antonio Conte sees Pogba as the future of his midfield, remarking: "Andrea Pirlo is unique and will not be easy to replace, but Pogba has already proven capable of doing so.
"He is a complete midfielder, with still plenty of room for improvement."
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