One player and two staff at Watford and Burnley assistant manager Ian Woan are among six positive Premier League tests for coronavirus.
The other two are at a third club, the details of which have not been revealed.
Players and staff who have tested positive will now self-isolate for seven days.
It comes as squads started non-contact training on Tuesday, as the Premier League steps up plans for a restart.
A total of 748 players and staff from 19 clubs were tested. Norwich City did their tests on Tuesday.
Burnley said Woan was “asymptomatic” and “currently safe and well at home”.
“He will remain in close communication with club personnel regarding his re-engagement in training once he is clear of the virus,” the club added. (Text, photo- BBC)