Having been booked twice in this season's competition previously, the 48th minute yellow card received by the South Korean took his tally to three for the tournament, triggering a one-game ban.
All yellow cards are now wiped after the quarter-finals, but only for those who didn't already have two to their name coming into this stage of the tournament. A third was always going to trigger a suspension.
Heung-Min Son informed on German TV that he’s out suspended for the semi-final first leg. Reaction: “I didn’t know!”
Ah, thanks for the clarification. Bummer though...