Arsène Wenger gave the following fitness updates at his pre-match press conference:

on the team news…
We have uncertainties about Monreal who had to come off last week with a foot injury, and about Gibbs. Vermaelen is back in the squad, Ozil is back in the squad. Both are available.

on Vermaelen covering the left back position…
If needed Thomas can play there, it's not his preferred position and he has been out for a long time now but we'll see. I still have 48 hours to make a decision.

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 27 Feb 2014