But the Italians doubt whether signing the 29-year-old for mega money will be worth it.
Arsene Wenger is fuming his pre-season preparations are being soured by a transfer saga again.
Juve director Giuseppe Marotta said: "Talk of our real interest in him seems excessive to me. A top player is not only judged by how much he costs.
"It can also mean a player who costs less but on the pitch shows an absolute value."