Jamie Carragher insists Roy Keane is 'the master with one line' and believes his colleague's savage takedowns as a pundit makes him the best in the business.
Ex-Manchester United hardman Keane is notorious for offering withering assessments of Premier League stars when working as a TV pundit.
At the weekend he described Manchester City full-back Kyle Walker as an 'idiot', called Sergio Aguero 'overweight' and previously said he would 'swing punches' at United pair David de Gea and Harry Maguire following a draw away at Tottenham.
Speaking on Walker, Keane told Sky Sports: 'Mane is up against an idiot.