By Nathan Ridley Manchester United have now conceded more goals this season than in their infamous 1970-71 campaign. Erik ten Hag and his players tasted defeat for the 14th time this Premier League season on Sunday, as they were beaten 1-0 by title-chasing Arsenal at Old Trafford. An early goal from Leandro Trossard made the difference, the 82nd strike which United have conceded in their 49 games across all competitions this term. The Red Devils last conceded more times than that 53 years ago when they were initially managed by Wilf McGuiness before Sir Matt Busby returned the dugout midway th…