article_snippet.sent: Per Mertesacker looks set to be ruled out of Arsenal’s derby against Chelsea  although the  defender has escaped any serious ankle ligament damage.
article_snippet.sent: Mertesacker, captain during the long absence of Mikel Arteta, limped off during the second half of the FA Cup semi-final against Reading at Wembley on Saturday.
article_snippet.sent: There were fears of a serious injury for the 6ft 6in German after Per Mertesacker twisted the joint but subsequent scans have shown it is a minor sprain.
article_snippet.sent: Per Mertesacker will miss Arsenal's visit by Chelsea  on Sunday due to an ankle injury .
article_snippet.sent: The stand-in Gunners captain is not expected to be fit in time for Sunday, however, and likely to be replaced at centre-half by Gabriel Paulista, who has started three times in the Barclays Premier League since The stand-in Gunners captain was signed in January from Villarreal.
article_snippet.sent: Scans showed the 6ft 6in German had just a minor ankle sprain when a more serious injury was feared .
article_snippet.sent: Mertesacker was substituted around the hour mark by Gabriel Paulista, who will deputise for Mertesacker on Sunday .
highlights_snippet.sent: Per Mertesacker twisted Per Mertesacker ankle in FA Cup semi-final at Wembley .
  