Who’s likely to start, who might be left out and who is unavailable? predicts the line-ups.
TUESDAY
GROUP A
Club Brugge v Paris
Club Brugge: Mignolet; Sobol, Deli, Mechele, Mata; Vanaken, Rits, Schrijvers; Diatta, Okereke, Bonaventure
Out: Vormer (suspended)
Doubtful: Mitrović (foot), Balanta (hamstring)
Paris: Navas; Meunier, Thiago Silva, Kimpembe, Bernat; Verratti, Marquinhos, Herrera; Di María, Mbappé, Sarabia
Out: Draxler (foot), Gueye (hamstring), Kehrer (foot), Neymar (hamstring)
Doubtful: Dagba (hamstring)
Galatasaray v Real Madrid
Galatasaray: Muslera; Mariano, Luyindama, Marcao, Nagatomo; Nzonzi, Seri, Feghouli, Belhanda; Babel, Andone
Doubtful: Falcao (achilles)
Madrid: Courtois; Carvajal, Varane, Ramos, Marcelo; Valverde, Casemiro, Kroos, James; Hazard, Benzema
Out: Nacho (ankle), Asensio (knee), Modrić (muscle strain) Lucas (fitness), Bale (unspecified), Mariano (omitted)
GROUP B
Tottenham v Crvena zvezda
Tottenham: Gazzaniga, Foyth, Sánchez, Vertonghen, Davies; Winks, Sissoko, Ndombele; Alli, Son, Kane
Out: Lloris (elbow)
Doubtful: Lo Celso (hip), Sessegnon (hamstring), Eriksen (leg)
Crvena zvezda: Borjan; Gobeljić, Milunović, Degenek, Rodić; Jovančić, Cañas, García, Marin, Van La Parra; Tomané
Out: Boakye (leg muscle)
Doubtful: Gajić (personal)
Olympiacos v Bayern
Olympiacos: Sá; Elabdellaoui, Semedo, Meriah, Tsimikas; Guilherme, Camara, Bouchalakis; Podence, Masouras; Guerrero
Out: Benzia (suspended)
Doubtful: Valbuena (hamstring), Torosidis (back)
Bayern: Neuer; Pavard, Boateng, Hernández, Alaba; Kimmich, Thiago, Coutinho; Perišić, Gnabry, Lewandowski
Out: Süle (cruciate), Arp (wrist), Cuisance (groin)
GROUP C
Shakhtar v Dinamo Zagreb (18:55 CET)
Shakhtar: Pyatov; Dodô, Kryvtsov, Matviyenko, Ismaily; Stepanenko, Alan Patrick; Marlos, Taison, Konoplyanka; Júnior Moraes
Out: none
Doubtful: Totovytskyi (fitness)
Dinamo: Livaković; Stojanovič, Dilaver, Perić, Leovac; Moro, Ademi, Olmo; Kadzior, Oršić; Petković
Out: Sandro Kulenović (metatarsal)
Doubtful: Ademi (ankle), Petković (ankle)
Manchester City v Atalanta
City: Ederson; Cancelo, Stones, Fernandinho, Mendy; De Bruyne, Rodri, Gündogan; Mahrez, Agüero, Sterling
Out: Laporte (knee), Sané (knee), Zinchenko (illness)
Atalanta: Gollini; Tolói, Djimsiti, Masiello; Hateboer, De Roon, Freuler, Castagne; A Gómez, Iličić; Muriel
Out: Zapata (adductor), Palomino (thigh), Kjær (adductor)
GROUP D
Atlético v Leverkusen (18:55 CET)
Atlético: Oblak; Trippier, JM Giménez, Hermoso, Lodi; Koke, Thomas, Saúl Ñíguez, Correa; Costa, Morata
Out: Félix (ankle), Savić (hamstring), Vrsaljko (knee)
Doubtful: none
Leverkusen: Hrádecký; L Bender, Tah, S Bender; Baumgartlinger, Demirbay; Bellarabi, Havertz, Amiri, Volland; Alario
Out: Bailey (thigh), Aránguiz (foot), Sinkgraven (thigh), Wendell (thigh)
Juventus v Lokomotiv Moskva
Juventus: Szczęsny; Cuadrado, Bonucci, De Ligt, Alex Sandro; Khedira, Pjanić, Matuidi; Bernardeschi, Higuaín, Cristiano Ronaldo
Out: none
Doubtful: De Sciglio (thigh), Douglas Costa (thigh), Ramsey (groin)
Lokomotiv: Guilherme; Ignatyev, Höwedes, Ćorluka, Idowu; Murilo; Al. Miranchuk, Barinov, Krychowiak, João Mário; Éder
Out: Smolov (hamstring), Zhemaletdinov (hamstring), Djordjević (knee), An. Miranchuk (foot)
Doubtful: Rybus (hernia)
WEDNESDAY
GROUP E
Genk v Liverpool
Genk: Coucke; Mæhle, Lucumí, Dewaest, Uronen; Heynen, Hagi, Berge; Ito, Samatta, Bongonda
Out: Vukovic (achilles), Neto Borges (foot)
Doubtful: none
Liverpool: Alisson Becker; Alexander-Arnold, Matip, Van Dijk, Robertson; Milner, Fabinho, Wijnaldum; Mané, Firmino, Origi
Out: Clyne (knee)
Doubtful: Salah (ankle), Shaqiri (calf)
Salzburg v Napoli
Salzburg: Stankovic; Kristensen, Onguéné, Wöber, Ulmer; Szoboszlai, Junuzović, Mwepu, Minamino; Hwang, Haaland
Out: Bernede (tibia fracture), Walke (foot)
Napoli: Meret; Di Lorenzo, Manolas, Koulibaly, Ghoulam; Callejón, Allan, Fabián Ruiz, Insigne; Milik, Mertens
Out: Hysaj (chest), Maksimović (thigh), Mario Rui (rested)
GROUP F
Inter v Dortmund
Inter: Handanovič; Godín, De Vrij, Škriniar; Candreva, Barella, Brozović, Vecino, Asamoah; Lukaku, Lautaro
Out: D’Ambrosio (fractured toe), Sánchez (ankle), Sensi (thigh)
Dortmund: Hitz; Akanji, Hummels, Weigl, Schulz; Delaney, Witsel; Hazard, Reus, Hakimi; Brandt
Doubtful: Bürki (knee), Alcácer (Achilles), Götze (cold)
Slavia Praha v Barcelona
Slavia: Kolář; Coufal, Kúdela, Frydrych, Bořil; Masopust, Ševčík, Souček,
Stanciu, Olayinka; Tecl
Out: Traoré (leg)
Doubtful: Hovorka (unspecified), Takács (unspecified)
Barcelona: Ter Stegen; Semedo, Piqué, Lenglet, Alba; De Jong, Busquets, Arthur; Messi, Suárez, Griezmann
Out: Roberto (knee)
GROUP G
Leipzig v Zenit (18:55 CET)
Leipzig: Gulácsi; Mukiele, Upamecano, Orban; Klostermann, Laimer, Sarrachi; Sabitzer, Forsberg; Werner, Poulsen
Out: Wolf (ankle), Schick (ankle), Adams (adductor), Konaté (hip)
Doubtful: Ampadu (concussion), Halstenberg (back)
Zenit: Kerzhakov; Karavaev, Ivanović, Rakits’kyy, Douglas Santos; Shatoy, Ozdoev, Barrios, Driussi; Dzyuba, Azmoun
Out: Malcom (thigh), Mammana (knee)
Benfica v Lyon
Benfica: Vlachodimos; Tomás Tavares, Ferro, Rúben Dias, Grimaldo; Florentino, Gabriel, Taarabt, Pizzi; De Tomás, Seferović
Out:Conti (thigh), Chiquinho (aductor), André Almeida (muscular)
Doubtful: Rafa (aductor)
Lyon: Lopes; Tete, Marcelo, Denayer, Koné; Thiago Mendes, Tousart, Aouar; Cornet, Dembélé, Terrier
Out: Depay (thigh), Dubois (thigh)
GROUP H
Ajax v Chelsea (18:55 CET)
Ajax: Onana; Dest, Veltman, Blind, Tagliafico; Martínez, Van de Beek, Álvarez; Ziyech, Tadić, Promes
Out: Bandé (fitness)
Chelsea: Kepa; Azpilicueta, Zouma, Tomori; James, Kovačić, Jorginho, Alonso; Willian, Abraham, Mount
Out: Emerson Palmieri (hamstring), Rüdiger (knee), Loftus-Cheek (achilles)
Doubtful: Kanté (groin), Barkley (ankle), Christensen (hamstring)
LOSC Lille v Valencia
LOSC: Maignan; Zeki Çelik/Pied, Fonte, Gabriel, Bradarić; André, Soumaré; Araújo, Ikoné, Bamba; Osimhen
Out:Weah (match fitness), Sanches (thigh)
Doubtful: Çelik (ankle)
Valencia: Cillessen; Wass, Garay, Gabriel, Costa; Torres, Kondogbia, Parejo, Cheryshev; Gameiro, Gómez
Out: Piccini (knee)
Doubtful: Guedes (foot), Coquelin (muscle), Rodrigo (adductor)