Liverpool have been urged to cash in on Luis Diaz and Cody Gakpo in order to dominate the Premier League. The two forwards have been a little patchy this season. Diaz has improved of late – culminating in a goal-scoring display on Wednesday against Fulham. But by and large, the Colombian has been disappointing this term. Gakpo meanwhile has been an inconsistent presence. Nine goals is a decent return for the Dutchman, although there’s no doubt he should have had more. As a result, Peterborough United chairman and Liverpool fan Darragh MacAnthony has urged the Reds to take action. Speaking on h…