Sandro Tonali is being investigated by the FA to establish whether he has broken betting rules since joining Newcastle in July.
talkSPORT understands the matter is separate to the offences Tonali committed in Italy resulting in a ten-month worldwide ban.
Tonali is believed to be cooperating with the FA amid fears he could face further sanctions.
The 23-year-old was hit with the ban from the Italian Football Federation (FIGC) last week after pleading guilty to placing bets on matches he featured in during his time in Serie A.
The Magpies’ £52million signing from AC Milan will miss the remainder of the season and next summer’s European Championships in Germany, should Italy qualify for the tournament.
Tonali made 12 appearances for Newcastle with his final game coming in last week’s 1-0 Champions League defeat to Borussia Dortmund.
The midfielder was quick to make an impression on Tyneside and scored his only goal for the club in the 5-1 opening day victory over Aston Villa.
Tonali quickly became apart of boss Eddie Howe's first-choice midfield trio alongside Bruno Guimaraes and Joelinton, providing the Magpies with much-needed know-how ahead of their return to the Champions League.
He featured in the opening group game draw at former club Milan and was a key figure in Newcastle's emphatic 4-1 victory over Paris Saint-Germain in September.
But his dream start began to turn sour when Tonali — along with Aston Villa's Nicolo Zaniolo — were sent home from international duty in October, after being informed of a police probe into their involvement in illegal betting.
Tonali has since admitted to having a gambling problem and agreed to a treatment programme consisting of eight months of rehab activities.
Discussing the player in his
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