Champions League
Anderlecht vs Arsenal
Goalkeeper Emiliano Martinez, 22, is set to make his Champions League debut for Arsenal at Anderlecht on Wednesday.
First-choice Wojciech Szczesny is suspended, while Colombia international David Ospina has a thigh problem.
Defender Calum Chambers is available after a domestic ban, while forward Lukas Podolski has overcome an illness.
Centre-back Laurent Koscielny (Achilles) and forwards Mesut Ozil (knee), Yaya Sanogo (hamstring) and Olivier Giroud (foot) are all out.
Theo Walcott is not yet fully fit as he recovers from a nine-month injury lay-off, while France full-back Mathieu Debuchy also remains a long-term absentee with an ankle problem.
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Wenger expecting fierce Anderlecht battle
Argentine Martinez has made two appearances for the Gunners since joining the club in 2011, with both of those starts coming in the League Cup.
Englishman Ryan Huddart, 17, will be on the bench as his back-up.
Arsenal are second in Group D with three points from two matches, three points behind leaders Borussia Dortmund. Anderlecht are third, level on one point with bottom side Galatasaray.
Arsenal manager Arsene Wenger, who celebrates his 65th birthday on Wednesday, said: "It is a big game for us and I just dedicate all my energy to getting things right to perform, because at the moment I feel there is a difference between the quality of our performances and the points we get.
"We want to add something to the quality of our performance and get the points that you feel is there in the team. That little percentage we can improve in the team is vital and I hope we get it."
Despite the Gunners travelling with a depleted squad, Anderlecht manager Besnik Hasi insists his side, who are top of the Belgian league and unbeaten after 11 matches, will not underestimate their opponents.
"Arsenal are playing in the Premier League every week - they are playing big games," he said. "We are playing in a smaller competition and we need these types of games to get better.
"We are a very young, talented team. But for us it will be a mistake if we are thinking that because Arsenal are missing some players and have not been at their top level in their competition, they will not be difficult opponents. That mistake will not happen here."
RSC Anderlecht
01 Proto
39 Vanden Borre
22 Mbemba Mangulu
03 Deschacht
18 Acheampong
16 Defour
31 Tielemans
07 Najar
10 Praet
20 Conte
15 Cyriac
Substitutes
09 Suárez
12 Colin
19 Kljestan
32 Dendoncker
33 Roef
42 Kabasele
45 Mitrovic
Arsenal
26 Martinez
21 Chambers
04 Mertesacker
18 Monreal
03 Gibbs
16 Ramsey
20 Flamini
10 Wilshere
17 Sánchez
23 Welbeck
19 Cazorla
Substitutes
07 Rosicky
08 Arteta
09 Podolski
15 Oxlade-Chamberlain
28 Campbell
39 Bellerin
43 Huddart
Ref: Carlos Velasco Carballo
MATCH STATS
Possession
50%
50%