Sunderland goalkeeper Lee Burge is facing an extended spell on the sidelines as the club continue to monitor his recent heart issues. Burge underwent blood tests after testing positive for Covid-19 and the results have caused concern at the Sky Bet League One club. The 29-year-old, whose last start for the Black Cats was in the 5-1 Carabao Cup quarter-final defeat to Arsenal on December 21, is set to be out for at least a month before being re-assessed. “He has still got an issue,” Former Sunderland manager Lee Johnson told a pre-match press conference ahead of his side’s trip to Bolton. ‘It seems to happen a lot after these injections or Covid.” Cardiologist Dr Aseem Malhotra responds to claims the Covid jab could have caused the heart problems affecting Sunderland goalkeeper Lee Burge. “If you are under 40 the risk of Myocarditis from the vaccine is higher than Myocarditis from Covid.”