Sunderland goalkeeper Lee Burge is expected to remain sidelined for another four or five weeks because of a heart issue.
Burge suffered heart palpitations after recently falling ill with Covid-19.
"He has a slightly inflamed heart," explained manager Lee Johnson, who added that the 29-year-old is expected to make a full recovery.
"He'll miss the next four or five weeks before undergoing tests to check that things are back to normal."
Johnson added to BBC Look North: "The care of the individual has to be at the forefront of your thinking because you don't want something dreadful happening to one of your players.