Bayern Munich chairman Karl-Heinz Rummenigge has slammed Jerome Boateng and said the Germany defender will be heavily fined for his "brainless" red card in their 4-1 win at Hamburg.
Boateng, 25, was shown a straight red shortly before the final whistle on Saturday after striking Hamburg's Kerem Demirbay in the face with Bayern already 4-1.
"When you're shown a red card five minutes before the end of the match when you're 4-1 up, then you can call that 'brainless'," fumed Rummenigge, who said Boateng will be fined a "large five-figure sum".
"Such a lack of discipline will not be accepted by Bayern Munich.
"In our jersey, you have to behave respectably and if you don't hear the message, then you have to feel it (in the wallet)."
Boateng's red card in the Bundesliga went down particularly badly just four days after Bayern's 4-0 drubbing at the hands of Real Madrid saw the holders crash out of the Champions League at the semi-final stage.
His dismissal means the 25-year-old will be suspended for Bayern's final league match against VfB Stuttgart on Saturday when they will be presented with the Bundesliga trophy at Munich's Allianz Arena.
Having won the German league title in March with a record seven games to spare, Bayern are still hoping to win the domestic double when they face rivals Borussia Dortmund in the German Cup final on May 17 at Berlin's Olympic Stadium.