According to Gazzetta Dello Sport, the 25-year-old is a priority goal for Juventus this summer while they want to strengthen their midfield.
The report adds that Luiz, 26, who only came to Aston Villa last summer, can be used as a bait to lure Newcastle to close a deal with the Serie A side.
Luiz has difficulty setting up in Turin with different injuries and a general lack of shape, making it excess to requirements.
It is clear that Tonali would be happy to stay in Newcastle and pay back the club that stood him during his gambling ban.