Arsène Wenger has revealed the following team news ahead of the West Ham game:

on Per Mertesacker...
He is better. He came in on Thursday and had a little session. He'll have a test. It is not certain that he will play.

on the sickness that has affected the team...
It is flu that has travelled from body to body. We have had Coquelin, Vermaelen, Walcott out. But nobody else has it at the moment.

on other team news...
There is nothing else. Wojciech and Fabianski are not back so Martinez will be back in the squad as the second goalkeeper.

on Bacary Sagna...
Maybe he will play on Monday night [for the under-21s]. He needs some games because he has not played for five months. He has been in training for a week now so he should be capable of playing for an hour.

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Copyright 2014 The Arsenal Football Club plc. Permission to use quotations from this article is granted subject to appropriate credit being given to www.arsenal.com as the source 5 Oct 2012