Man City 1-1 Arsenal: Mancini concerned by defensive 'problem'

Manchester City manager Roberto Mancini admits his team have had a "problem" defending so far this season after they conceded a late equaliser to draw 1-1 at home to Arsenal.

The reigning Premier League champions have yet to keep a clean sheet this campaign and Mancini admits he needs to work with his players to make defensive improvements.

City took the lead through Joleon Lescott's first-half header, but Laurent Koscielny's leveller for the Gunners means both sides remain undefeated in the league.