The November internationals are over and we have learned there is a surprising depth in the Irish rugby team. But the games against the All Blacks and the Wallabies have also shown that Ireland continue to rely on a core of players who remain utterly critical to the team's overall success. But which player is the most important to Ireland's? Who's the one player we would absolutely require in a knockout World Cup game or a Six Nations decider?
Have your say below.