Wayne Rooney has been banned for two Champions League matches by Uefa.
Rooney is sent off
The United striker was sent off for sarcastically clapping after ref Kim Milton Nielsen showed him the yellow card in a match against Villarreal.
The second match was added to his punishment after the referee said Rooney also swore at him.
The suspension means the England player will miss United's games against Benfica on 27 September and Lille on 18 October - both at Old Trafford.
If the club want to argue against the match ban for swearing, they must say so by midnight on Friday.
A statement by Uefa's control and disciplinary body said: "It is beyond any doubt that Wayne Rooney committed several disciplinary offences, notably by taking two yellow cards resulting in a red card, as well as by displaying unsporting conduct.
"As a result, it is appropriate to impose a two-match ban for the reported misconduct."
The teenager's temper has got him into trouble before, and he was lucky to avoid being shown a red card in England's World Cup qualifying defeat to Northern Ireland last week.