Aaron Ramsey faces a late fitness test for Arsenal's Boxing Day Premier League clash with West Brom at the Emirates Stadium.
The Wales midfielder has only made 10 Gunners appearances in an injury-hit campaign, and is bidding to shake off his latest hamstring problem.
Alex Oxlade-Chamberlain has failed to beat his own hamstring issue in time to face West Brom, while Danny Welbeck is back in training after knee trouble but still some way off a return.
James Morrison is a doubt for West Brom' having suffered from flu this week.
The midfielder did not train until Friday, when he remained separate from the main group, and the Baggies will assess him before their game at the Emirates Stadium.
Jonny Evans could return after missing the last two games with a calf injury while Saido Berahino is still unlikely to be in the squad as he tries to regain fitness having not played since September.
Arsenal squad: Cech, Ospina, Martinez, Bellerin, Jenkinson, Holding, Gabriel, Koscielny, Gibbs, Monreal, Maitland-Niles, Elneny, Coquelin, Xhaka, Ramsey, Ozil, Walcott, Reine-Adelaide, Iwobi, Sanchez, Akpom, Giroud.
West Brom squad: Foster, Myhill, Palmer, Dawson, Evans, Nyom, Olsson, McAuley, Galloway, Brunt, Fletcher, Yacob, Gardner, Morrison, McClean, Chadli, Phillips, Field, Rondon, Leko, Robson-Kanu,