West Brom are sweating on the fitness of midfielder Chris Brunt.
Brunt is suffering from a fever, but boss Roy Hodgson is hopeful he will recover in time to take on the Gunners, whom the Baggies beat 3-2 at the Emirates earlier in the campaign.
Youssouf Mulumbu is fit to play after shaking off a muscle problem. Graham Dorrans is definitely out with an ankle injury, while on-loan striker Carlos Vela is not eligible to face his parent club.
Veteran goalkeeper Jens Lehmann will take his place on the Arsenal bench.
Captain Cesc Fabregas (hamstring), England winger Theo Walcott (ankle) and midfielder Alex Song (knee) are all not yet fit, but striker Nicklas Bendtner should return after missing the FA Cup defeat at Manchester United through illness.
Centre-halves Thomas Vermaelen (Achilles) and Johan Djourou (shoulder) are sidelined, along with goalkeepers Wojciech Szczesny (hand) and Lukasz Fabianski (shoulder).
WBA (from): Carson, Reid, Meite, Olsson, Shorey, Mulumbu, Scharner, Brunt, Thomas, Fortune, Odemwingie, Tchoyi, Myhill, Morrison, Tamas, Jara, Cech.
Arsenal (from): Almunia, Clichy, Squillaci, Koscielny, Sagna, Diaby, Nasri, Wilshere, Ramsey, Arshavin, van Persie, Lehmann, Eboue, Gibbs, Bendtner, Chamakh, Rosicky, Denilson.