Sunderland are awaiting news on Jordan Pickford's fitness after the in-form goalkeeper injured his knee on Boxing Day.
The 22-year-old has been in eye-catching form despite the Black Cats' struggles this season and any absence would be a major blow for manager David Moyes.
While Pickford completed the full 90 minutes of the 3-1 defeat at Manchester United he was in some discomfort after the match and was sent for scans.
On Wednesday morning the club were still awaiting the results and have yet to confirm if he will miss the New Year's Eve trip to Burnley.