The return of the Frenchman has boosted Emery's options at the back and the Arsenal manager admits that it is great news that the defender is again fit to play for the team.
Both Sokratis and Shkodran Mustafi are suspended for the meeting with Southampton, while Rob Holding is out for an extended period after he ruptured the cruciate ligament in his knee.
Nacho Monreal is back in contention following a hamstring strain and summer signing Stephan Lichtsteiner could feature as a makeshift centre-half as he did as a substitute in the recent 2-2 draw against Manchester United at Old Trafford. "And then we are going to continue this process maybe Sunday, but I want to wait tomorrow and Saturday how he will feel after this match". "But I think every player [is] now OK for helping us in the position we need".
Emery was also impressed and gave him a special mention in the after-game conference.
The centre-back suffered an Achilles tendon injury towards the end of last season and only returned to the bench against Huddersfield last weekend.More news: Deadline approaches for health insurance enrollment
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"Now we will think for Sunday".
Mesut Ozil insists he is "prepared" to play full role in Arsenal's festive programme after recovering from a back injury.
"He played with a very big personality and sometimes with a very good performance".
"It was Wednesday in training", he said when asked when he knew he would be playing. When he comes back like today with us, every supporter of Arsenal is happy, and also the player. "Lacazette, I think he needs rhythm, and it's not bad for him to play today". "We were speaking at half-time, they were trying one-on-ones against the opposition".