<p><a class="link" rel="nofollow" target="_blank" href="/sports-news/term/roberto-mancini">Roberto Mancini</a> admits he is growing increasingly concerned by the way Man City are shipping goals.</p><br /><p>The Premier League champions have made an unbeaten start to the new season, but it has been an unconvincing one in defence.</p><br /><p>They have failed to keep a clean sheet in any competition, while in the Champions League, Mancini watched on in horror as his side let in two late goals to lose 3-2 to Real Madrid in midweek.</p><br /><p><a class="link" rel="nofollow" target="_blank" href="http://www.talksport.co.uk/sports-news/football/premier-league/120923/mancini-shocked-man-citys-sloppy-defending-181614" target="_blank">read more</a></p>
