Team news ahead of Wednesday's games

Bayern München v Arsenal
Bayern: Neuer; Lahm, Martínez, Boateng, Alaba; Alonso; Robben, Thiago, Douglas Costa; Müller, Lewandowski.
Out: Götze (groin), Ribéry (ankle), Rode (thigh)
Doubtful: Badstuber (thigh), Bernat (groin)

Arjen Robben hasn't played in the competition since March©AFP/Getty Images

Arsenal: Čech; Debuchy, Mertesacker, Koscielny, Monreal; Coquelin, Cazorla; Campbell, Özil, Sánchez; Giroud.
Out: Walcott (calf), Oxlade-Chamberlain (hamstring), Arteta (ankle), Ramsey (hamstring), Ospina (shoulder), Wilshere (calf), Rosický (knee), Welbeck (knee), Bellerín (groin)

Olympiacos v Dinamo Zagreb
Olympiacos: Roberto; Elabdellaoui, Botía, Siovas, Masuaku; Milivojević, Kasami; Pardo, Fortounis, Sebá; Ideye.
Out: Bouchalakis (thigh), Domínguez (hamstring), Maniatis (knee), Vouros (unspecified)
Doubtful: Cambiasso (calf)

Dinamo Zagreb: Eduardo; Măţel, Gonçalo, Benković, Pivarić; Fernandes, Machado, Antolić, Rog, Pjaca; Henríquez.
Out: Pinto (hamstring), Schildenfeld (thigh), Soudani (thigh), Ademi (suspended), Sigali (ligaments)
Doubtful: Pavičić (hamstring)

Barcelona v BATE Borisov
Barcelona: Ter Stegen; Sergi Roberto, Mascherano, Vermaelen, Adriano; Busquets, Iniesta, Rakitić; Sandro, Suárez, Neymar.
Out: Messi (knee), Douglas (foot), Rafinha (knee), Mathieu (omitted)

BATE: Chernik; Polyakov, Gaiduchik, Milunović, Mladenović; Gordeichuk, Nikolić, A Volodko, Stasevich; Hleb; Jevtić.
Out: Rodionov (knee), Signevich (ankle), Zhavnerchik (ankle)

Roma v Bayer Leverkusen
Roma: Szczęsny; Florenzi, Manolas, Rüdiger, Digne; Nainggolan, De Rossi, Pjanić; Gervinho, Džeko, Salah.
Out: Totti (thigh), Keita (thigh)
Doubtful: Florenzi (fatigue)

Leverkusen: Leno; Donati, Tah, Papadopoulos, Wendell; Kampl, Kramer; Mehmedi, Bellarabi; Hernández, Kiessling.
Out: Jedvaj (thigh), Hilbert (knee), Seung-Woo (ankle)
Doubtful: Bender (ankle)

Maccabi Tel-Aviv v Porto
Maccabi Tel-Aviv: Rajković; Shpungin, Tibi, Ben Haim I, Rikan; Alberman, Igiebor, Mitrović; Ben Haim II, Vermouth, Zahavi.
Out: Itzahaki (thigh), Dasa (harmstring), Radonjić (ankle)
Doubtful: Tal Ben Haim I (back), Igiebor (knee)

Yacine Brahimi sits this one out©AFP/Getty Images

Porto: Casillas; Maxi Pereira, Marcano, Martins Indi, Layún; Danilo, Rúben Neves, André André, Imbula, Corona; Aboubakar.
Out: André Silva (ankle), Maicon (thigh), Brahimi (thigh)

Chelsea v Dynamo Kyiv
Chelsea: Begović; Ivanović, Terry, Cahill, Azpilicueta; Ramires, Matić, Fàbregas, Hazard; Willian, Costa.
Out: Courtois (knee), Falcao (unspecified)
Doubtful: Pedro (unspecified)

Dynamo Kyiv: Shovkovskiy; Vida, Dragovic, Khacheridi, Antunes; Rybalka, Sydorchuk, Buyalskiy, González, Yarmolenko; Kravets.
Out: Danilo Silva (wife due to give birth)

Lyon v Zenit
Lyon: Lopes; Jallet, Umtiti, Yanga-Mbiwa, Bedimo; Gonalons, Darder, Tolisso; Valbuena, Lacazette, Beauvue.
Out: Fekir (knee), Grenier (fitness), Kalulu (ankle), Biševac (fitness), Fofana (ankle)

André Villas-Boas cannot call upon Ezequiel Garay©AFP/Getty Images

Zenit: Kerzhakov; Anyukov, Neto, Lombaerts, Criscito; Javi García, Witsel, Shatov, Danny; Hulk, Dzyuba.
Out: Fayzulin (knee), Garay (muscle)

Gent v Valencia
Gent: Sels; Asare, Mitrović, Nielsen; Neto, Kums; Saief, Milicevic, Dejaegere, Foket; Depoitre/Coulibaly.
Out: Gershon (knee), Matton (foot), Van der Bruggen (stomach muscle), Pedersen (ankle)
Doubtful: Johansson (ill), Depoitre (ankle), Milicevic (thigh)

Valencia: Doménech; Barragán/Cancelo, Santos, Mustafi, Gayà; Javi Fuego, André Gomes, Parejo, Feghouli; Piatti, Alcácer.
Out: Abdennour (hamstring), Ryan (knee), Diego Alves (knee), Rodrigo (knee)
Doubtful: Feghouli (heel)