Jose Mourinho wants Manchester United's players to start showing better leadership and mental strength.
So dominant for so long under Sir Alex Ferguson, United have struggled to replicate that supremacy since the Scot's retirement in 2013.
It is very early in Mourinho's tenure but 10 matches into the Premier League season they are already seven points off the top-four - a gap they will look to close before the international break this Sunday at Swansea.
United approach the match reeling from a difficult 2-1 Europa League defeat at Fenerbahce, where Moussa Sow's overhead kick after 65 seconds set the Turkish side on course for victory.