The 27-year-old injured his quad during the Magpies' 3-0 FA Cup win against Sunderland on Saturday.
More to follow.
- Latest Newcastle United news, analysis and fan views
- Get Magpies news notifications
- Listen to the latest Newcastle United Podcast

- Our coverage of Newcastle United is bigger and better than ever before - here's everything you need to know to make sure you never miss a moment
A split image of Manchester City's Erling Haaland and Arsenal's Gabriel battling for possession and a screengrab of City's notifications page in the BBC Sport app Analysis and opinion from our chief football writer.