The Portugal international moved to Juve from Porto over the summer and has had a slow start to life in Serie A.
Tuttosport says the 25 year-old is unsettled and his agents are due in Turin this week for talks about his situation.
Watching developments are clubs from England, including Crystal Palace, with Juve willing to sell if they can make back the €12m spent to sign Joao Mario six months ago.
Under Luciano Spalletti, Joao Mario has found himself sidelined, suggesting he has no place in the new Juve coach's system.
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