Arsenal take on Schalke at the Emirates Stadium in tonight's Champions League Group B clash. Kick-off time is at 7.45pm and the match will be screened live on UK television on Sky Sports 4. Here's the team news ahead of the game... Arsene Wenger is hoping to have French defender Laurent Koscielny to call upon after his recent back injury, though England international winger Alex Oxlade-Chamberlain will definitely miss out with a hip problem. Definitely sidelined are left-back Kieran Gibbs (thigh) and forward Theo Walcott (chest), whilst midfielder Jack Wilshere will be rested completely after playing for the Arsenal Under-21s on Monday. Also unavailable through injury after first-choice 'keeper Wojciech Szczseny with an ankle problem, midfielder Abou Diaby (thigh), right-back Bacary Sagna (broken leg) and midfielder Tomas Rosicky (hamstring). The Gunners currently sit top of Group B with a 100% record with prior wins over Montpellier and Olympiakos. Line-ups from; Arsenal (from): Mannone, Santos, Mertesacker, Vermaelen, Jenkinson, Cazorla, Arteta, Ramsey, Gervinho, Podolski, Giroud, Martinez, Coquelin, Djourou, Koscielny, Arshavin, Chamakh, Frimpong, Gnabry.