article_snippet.sent: Defender Per Mertesacker believes Arsenal have become a stronger unit from their the FA Cup success of last season, but cannot allow their any sense of complacency against Reading at Wembley in Saturday's the FA Cup semi-final.
article_snippet.sent: Per Mertesacker will not allow Arsenal to become complacent in the FA Cup semi-final against Reading .
article_snippet.sent: Mertesacker believes the squad have it within the squad to sustain a challenge for honours in the coming seasons.
article_snippet.sent: The bedrock of Arsenal's resurgence has been the return to fitness of key men, which has left the likes of Theo Walcott, Danny Welbeck and Kieran Gibbs all looking on from the bench.
article_snippet.sent: Mertesacker believes such strength in depth can only be a positive for the squad's development. '
article_snippet.sent: It is really something that lifts everyone at the club,' Mertesacker said. '
highlights_snippet.sent: Per Mertesacker feels they have become stronger since winning last year .
  
highlights_snippet.sent: Defender Per Mertesacker will not allow complacency to creep in however .