The son of Liverpool manager Kenny Dalglish attacked ref Howard Webb after defeat at Manchester United.
Paul Dalglish, son of returning Kop hero Kenny, tweeted his opinion of Webb.
He wrote: "Howard Webb MBE. Manc of the Busby Era. I am not normally bitter but it is different rules against them."
He also said: "Fergie has his puppet Webb on a piece of string."
The Sun says Dalglish posted a mock-up picture of Webb and Alex Ferguson.