According to Mail Online, the Magpies midfielder is facing up to three months on the sidelines after undergoing surgery in London over the weekend.
The 30-year-old picked up a hamstring injury during a pre-season friendly with Benfica and is set to miss the first half of the Premier League season.
If true, Shelvey won’t return until after the World Cup when the 2022-23 campaign resumes on Boxing Day.
Indeed, the former Liverpool man isn’t the only injury concern.
Ahead of United’s trip to Brighton on Saturday (kick-off), NewcastleWorld takes a look at the club’s current injury list: