If someone was to sit down and evaluate where this season has gone so painstakingly wrong for Norwich City, defensive frailties would feature heavily in their report. After 27 games, the Canaries rank among the worst teams in the league, having conceded 43 goals. By way of comparison, second bottom QPR have conceded just 39 goals, despite having lost 16 matches so far this season. But to give credit to David Wagner and his side, they have certainly tightened up in recent weeks. Following the 3-2 victory at Cardiff in November, Norwich had conceded 32 goals from their first 16 Championship outi…