Claudio Pizarro has been warned about his future conduct after being dropped by Werder Bremen at the weekend.
The Peruvian striker, on loan in Germany from Chelsea, was omitted from Bremen's travelling squad for Saturday's 2-1 defeat at Energie Cottbus after arriving late for training on Friday.
Pizarro had been visiting his brother in Munich and did not arrive back in Bremen in time to take a full part in the final preparations for the weekend encounter.
Coach Thomas Schaaf therefore took the decision to cut him from his side, with that punishment supported by the club's general manager Klaus Allofs.
"It was a huge disappointment for me that that happened to a player like Pizarro," Allofs told BILD.
"We signed him to act as a leading player who should serve as a role model to the others but then he was suspended for violent conduct against Karlsruhe and now this happens.
"To have let him play would have sent out the wrong signal," he added.
"We cannot accept such behaviour. We voluntarily dropped one of our weapons but we have got to live with that."
The defeat leaves Bremen marooned in the midst of mid-table, without a win in four games.
Schaaf admits performances have not been good enough of late and has called on his underperforming players to raise their game.
"It may be true that we have the players capable of clinching a top-four finish in the Bundesliga, but too many of them are not at their best," he said.
"We know what we have to do now. It is possible that we could end up in trouble if we are not careful.
"We will not forget that and at the end of the season we will make decisions based on the performances of the players.
"There will not be a clear-out, but there will be necessary changes."