Aston Villa to sue Carragher over 'unacceptable insults'

• Aston Villa announced plans to take legal action against Jamie Carragher.
• Carragher made comments deemed as 'unacceptable insults' towards the club and its fans.
• The club's chairman, Nassef Sawiris, signed the statement announcing the legal action.
• Carragher told Villa fans to 'shut the fuck up' after facing criticism.
• The club branded Carragher's comments as unacceptable and plans to pursue legal action.