Manchester City boss Manuel Pellegrini is unimpressed by complaints from Stevan Jovetic after he was dropped from their Champions League squad list.
Jovetic accused Pellegrini of "killing" him with his decision.
The manager has told his disgruntled star to keep his mouth shut and keep working hard.
Pellegrini said: "I think that Stevan is a professional and he must work to try to play in the ways he knows in the time in the matches that he can do it."