Arsenal will be without the suspended Sokratis Papastathopoulos for Monday's Premier League trip to Watford.
The Greece international was shown a 10th booking of the campaign in the defeat to Everton last weekend and has picked up a two-game ban as a result.
The Gunners will be hopeful Granit Xhaka (groin) is fit enough to be involved, although long-term injury absentees Danny Welbeck (ankle), Rob Holding and Hector Bellerin (both knee) are still missing.
Meanwhile, Emery praised Aaron Ramsey following Arsenal's Europa League victory over Napoli and insists the Juventus-bound midfielder is only thinking about finishing the season well with the Gunners.
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The Wales international will move to Turin at the end of his contract this summer but has continued to put in quality performances since the deal was announced.
"His performances in this moment for us show that he wants to do something important with us," the Spaniard said.
"Because I think he feels a lot for Arsenal as a club. When he's here with our supporters, he gives us all he can, not individually, but in the collective.
"I want to enjoy this moment with him. I want to do something important with him. His focus is very big, he's thinking of Arsenal only."
Provisional squad: Leno, Cech, Maitland-Niles, Lichtsteiner, Jenkinson, Mustafi, Koscielny, Mavropanos, Monreal, Kolasinac, Xhaka, Guendouzi, Torreira, Elneny, Iwobi, Mkhitaryan, Suarez, Ramsey, Ozil, Aubameyang, Lacazette, Nketiah.
