Newcastle United were forced to cancel training on Monday and have closed the club’s Benton headquarters amid a Covid-19 outbreak - leaving Friday’s trip to Aston Villa in doubt.
Sportsmail understands players expect Tuesday's session will also be scrapped after at least five positive cases in the camp in the past week. That would leave them with just two days to prepare for the game at Villa Park.
However, that fixture could yet be postponed if, as expected, more positive results are confirmed.
Steve Bruce’s side were scheduled to train on Monday afternoon as they awaited test results from Sunday.