21.02 In case of repeated cautions, a player is suspended for the next competition
match:
a) after two cautions in two different qualifying matches, as well as after the
fourth caution during the qualifying phase;
b) from the first match in the group stage, after three cautions in three
different matches, as well as following any subsequent odd-numbered
caution (fifth, seventh, ninth, etc.).
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21.03 Single yellow cards and pending suspensions are always carried forward
either to the next stage of the competition or to another club competition in
the current season.
21.04 Exceptionally, single cautions from the qualifying phase that have not
resulted in a suspension expire on completion of the qualifying phase in
question.
21.05 Cautions and pending yellow-card suspensions from club competition
matches expire at the end of the season.
