The task facing Manchester United now – with Andre Onana in top form and Rasmus Hojlund back in action – is all about finding the right balance. With their defence transformed from last season – both in terms of personnel and performance – can Erik ten Hag marry a better record at the back with a much-needed ruthless streak in the final third? Manchester United had no problems finding the net during the 7-0 midweek win over Barnsley. But, while Ten Hag lauded both Matthijs de Ligt and Marcus Rashford as they scored in quick succession against Southampton last time out, United still missed thei…