The youngster only left Italy in the summer, having been sold by AC Milan to the Portuguese giants. However, he's struggled to find first team space so far this season.
A Bola says Juve are pushing to bring Cristante back to Serie A - and willing to do business as early as January.
Juve are prepared to go as high as €9 million for the young midfielder, who barely has a handful of first team appearances to his name.
Former Milan coach Massimiliano Allegri, now in charge of Juve, is driving the deal.
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