Sunderland are waiting on the results of tests on goalkeeper Lee Burge after he suffered a heart issue in the wake of his recent positive Covid test.
Burge was on the bench for Sunderland's win against Sheffield Wednesday at the end of December but tested positive for Covid shortly afterwards and has not featured in the matchday squad since.
And Black Cats boss Lee Johnson has revealed that the 29-year-old has had a heart problem which needed to be checked out before he could return to action, with the club expecting the results of blood tests later today.