Gallas in fresh injury blow for Gunners

ARSENAL have been hit with a major injury blow ahead of Sunday&rsquo;s derby visit of table-topping Chelsea with the news that William Gallas is still struggling with a swollen eye.<br /><br />The French defender suffered a nasty clash of heads with team-mate Andrey Arshavin during Tuesday night&rsquo;s 2-0 Champions League victory over Standard Liege, before eventually limping off with an ankle injury.<br /><br />But Gallas&rsquo; eye is still so swollen he can not even put his contact lenses in and boss Arsene Wenger admits the key defender remains a &ldquo;big question mark&rdquo; for the crunch Premier League clash against his former club.<br /><br />&ldquo;Today I cannot say that William Gallas will play, unfortunately,&rdquo; Wenger said. &ldquo;The ankle should be alright but the eye is still very, very swollen. He wears contact lenses and at the moment he would not get them in. <br /><br />&ldquo;We hope on Sunday it will be better. He is not comfortable but I am optimistic because we still have three days. It is Thursday today and we play on Sunday afternoon so we are confident he can make it. <br /><br />Of forward Arshavin, Wenger added: &ldquo;Arshavin is okay, he was in shock, but he is okay.&rdquo;<br /><br />The Liege game has already come at a cost for the Gunners with full-back Kieran Gibbs fracturing a foot bone in the dying minutes, keeping him out for around three months.<br /><br />Losing Gallas would be a huge blow for the Gunners as they look a tame a potent Chelsea strikeforce which welcomed back Didier Drogba from injury in Porto on Wednesday night.<br /><br />Blues boss Carlo Ancelotti will also be boosted by the successful returns of midfielder Michael Ballack on Wednesday, although Frank Lampard is still out with a thigh injury.