Premier League clubs in Tier 4 areas are to revert to twice-weekly Covid testing, Sportsmail has learned.
In what has been described as ‘an additional precaution’ sides in the highest level of restrictions will now be subject to tests every 72 hours.
The move is likely to be rolled out across all top flight sides following the Christmas period, amid a rise in the number of positive cases and the arrival of a mutant version of the virus.
Currently, clubs were being tested once a week by a company operating on behalf of the league.