If one or more players or officials of a club test positive for COVID-19 in the tests required by the UEFA Return to Play Protocol, the match will take place as scheduled unless the national/local authorities of one or both clubs involved or of where the match will take place (in case of a neutral country) require a large group of players or the entire team to go into quarantine. If at least 13 players registered on the A list (including at least one goalkeeper) are available, the match must go ahead on the scheduled date. If less than 13 players registered on the A list or no registered goalkeeper are available, UEFA may allow a rescheduling of the match, if the relevant national/local authority seeks new tests to allow a sufficient number of players (at least 13 including at least one goalkeeper) to participate in the match. Alternatively, the club may field players who have not been registered with UEFA within the deadlines stipulated in the present regulations, provided that these players (i) are duly registered with their national association as playing for the club concerned in accordance with the association’s own rules and those of FIFA and (ii) are tested negative in accordance with the UEFA Return to Play Protocol. If it is not possible to reschedule the match within the final deadline set out in, the club that cannot play the match will be held responsible for the match not taking place and the match will be declared by the UEFA Control, Ethics and Disciplinary Body to be forfeited by the club, which will be considered to have lost it by 3-0. Moreover, the UEFA Control, Ethics and Disciplinary Body may take further disciplinary measures if the circumstances so justify.
If any member of the appointed referee team for a match tests positive for COVID-19, UEFA may exceptionally appoint replacement match officials who (i) may be of the same nationality as one of the clubs, and/or (ii) may not be on the FIFA list.