Liverpool manager Jurgen Klopp is uncertain whether the club's Brazilian trio Alisson, Fabinho and Roberto Firmino will be able to face Leeds on Sunday.
Klopp was heavily critical of the South American football authorities over their handling of the situation, with other Premier League clubs such as Manchester City and Chelsea also set to be affected.
The Brazilian FA are imposing a five-day restriction on the players they called up for qualifying, even though they did not travel as clubs did not permit them to fly to 'red-list' countries.