Linfield, the reigning champions of Northern Ireland, confirmed on Tuesday evening that a member of their squad had tested positive for coronavirus.
"This club is taking advice from the relevant authorities and will provide an update when we have further details," the Danske Bank Premiership leaders announced on their website.
The club also confirmed the postponement of tomorrow night’s Linfield Swifts v Carrick Rangers reserve game.
Very unpleasant news that one of our players has tested positive for Covid-19. The priority now is to look after the welfare of our players and staff. Issues around football will be addressed in due course.— Roy McGivern (@RoyMcGIvern) March 10, 2020
The Irish FA added in a statement: "Having been made aware that an individual, who recently used some of the facilities at the National Football Stadium at Windsor Park, has subsequently tested positive for Covid-19, the Irish FA has taken the decision to conduct a deep clean of the premises with immediate effect as a precautionary measure.
"We have instructed staff members to work from home for the next 48 hours and will continue to update them, as well as our partners based at the stadium, regularly."
There is the potential for a play-off final in the Belfast stadium on March 31 between Ireland and Northern Ireland should both teams win their semi-finals. It was announced earlier that Ireland's game in Slovakia will take place behind closed doors while ticket sales for Northern Ireland's clash in Bosnia were suspended by the Bosnian FA.
Former international John Anderson has warned the Republic of Ireland not to believe that they have been handed the advantage in their Euro 2020 play-off clash with Slovakia.