Nacho Monreal
The left back was brought to the club on an emergency basis last January after an injury to Gibbs. But so far he has played only in parts and has failed to maintain the consistency that a title winning squad should have. His showing against Everton was extremely poor and it was also made poor by the lack of support that he got from the rest of the squad. The good news for Arsenal fans is that Gibbs is now back from injury and could if he could prove his fitness before Sunday’s clash, then he might very well replace Monreal.
If not Wenger can use Vermaelen on the left, provided if Koscielny returns in time. Sagna at left back is also another option.