ROY KEANE will go head-to-head with Graeme Souness on Sky’s coverage of Liverpool’s clash against Manchester United on Sunday – and fans think it might be better viewing than the game. In his first public appearance since being sacked as Martin O’Neill’s assistant by the Republic of Ireland, the ex-United midfielder will be among three pundits working on the match. Super Sunday regulars Souness and Jamie Carragher – both heroes of Liverpool’s recent past – will also be in the studio raising the prospect of a fiery exchange of views between the trio. Gary Neville, the ex-United full-back, will be on co-commentary for the match. Keane has been extremely critical of United ever since he left under a cloud in 2005. His final game for the club came in a goalless draw at Anfield.The subject of Paul Pogba’s role at United is likely to be high on the agenda, with Souness a constant critic of the France World Cup winner. Though Liverpool versus United is regarded as one of the stand-out games of any Premier League campaign, many fans feel the decision to enlist Keane will provides an additional slice of entertainment which could even eclipse the contest on the…