Neil Warnock accused Liverpool of “lacking class” after Cardiff missed out on a loan deal for Nathaniel Clyne.
The defender, who was given his professional debut by Warnock, has been a long-term target for Cardiff.
But on Friday it was announced that he had sealed a season-long loan to Bournemouth.
Speaking after Cardiff lost to League One side Gillingham in the FA Cup on Saturday, Warnock expressed his frustration with Liverpool and Clyne.
“I was disappointed with Nathaniel Clyne,” said the Cardiff manager.
“Having known the player and given him his debut, I’m disappointed not just with the boy himself but with Liverpool as well for not ringing me.
“To see it on television when I’ve done everything right and they’ve promised that he’s my player this week, it’s a disgrace for me, it’s a lack of class isn’t it?
“But listen, we’re not going to get any favours, whether it’s on the pitch or off it and we’re always up against it and that’s when we’re good.”