Arsenal vs Olympiacos live: Full Champions League line-ups

Arsenal will aim for successive Champions League wins in 2025/26 when the Premier League side host Olympiacos on Matchday 2 on Wednesday.

The Gunners started their campaign with a 2-0 win at Athletic Club courtesy of substitutes Gabriel Martinelli and Leandro Trossard trading second-half goals and assists for each other.

Olympiacos drew 0-0 at home to Pafos on Matchday 1, dominating possession but failing to tellingly break the visitors down despite having a numerical advantage for more than 65 minutes.

101GreatGoals.com has full Champions League team news and line-ups from Arsenal vs Olympiacos, as well as details on how to watch the action live.

Arsenal lineup vs Olympiacos

Defender Piero Hincapie and forwards Noni Madueke and Kai Havertz remain sidelined.

Captain Martin Odegaard returns to the starting XI having recovered his fitness following a shoulder injury.

Bukayo Saka, Eberechi Eze, Jurrien Timber, Riccardo Calafiori and Declan Rice all drop to the bench following the dramatic 2-1 win over Newcastle United. Cristhian Mosquera also drops to the bench.

Ben White, William Saliba, Myles Lewis-Skelly and Mikel Merino all come into the starting XI.

Arsenal starting XI: Raya, White, Saliba, Gabriel, Lewis-Skelly, Zubimendi, Merino, Odegaard, Trossard, Martinelli, Gyokeres.

Arsenal substitutes: Arrizabalaga, Setford, Mosquera, Timber, Calafiori, Norgaard, Nwaneri, Rice, Saka, Eze.

Olympiacos lineup vs Arsenal

Right-back Rodinei and striker Roman Yaremchuk miss out for the visitors.

Olympiacos starting XI: Tzolakis, Ortega, Pirola, El Kaabi, Gelson Martins, Dani Garcia, Costinha, Chiquinho, Hezze, Restos, Podence

Olympiacos substitutes: Paschalakis, Kouraklis, Biancone, Kalogeropoulos, Sciponi, Strefezza, Onyemaechi, Pnevmonidis, Mouzakitis, Taremi

How to watch Arsenal vs Olympiacos: TV channel, live online stream

Kick-off on Wednesday is at 20:00 BST (15:00 ET / 12:00 PT), with the match being shown live in the UK on TNT Sports 1 and TNT Sports Ultimate.

TNT Sports costs £29.99 a month through discovery+, which includes Eurosport and entertainment and is available on a vast range of devices including smart TVs and gaming consoles.

Arsenal Champions League fixtures, results 2025/26

As well as the reigning Greek champions, Arsenal’s opponents in the league phase include the third and fourth-placed teams in Spain last season, Atletico Madrid and Athletic Club.

Czech titlists Slavia Prague and Kazakh counterparts Kairat Almaty are also among the clubs they will face.

Club Brugge finished second in Belgium in 2024/25, as did Inter in Italy. Bayern won the Bundesliga by 13 points but were knocked out of the Champions League by the Nerazzurri in the quarter-finals.

All fixtures start at 20:00 GMT / 15:00 ET / 12:00 PT unless otherwise stated.

Tuesday, September 16: Athletic Club 0-2 Arsenal

Wednesday, October 1: Arsenal vs Olympiacos

Tuesday, October 21: Arsenal vs Atletico Madrid

Tuesday, November 4: Slavia Prague vs Arsenal (17:45)

Wednesday, November 26: Arsenal vs Bayern Munich

Wednesday, December 10: Club Brugge vs Arsenal

Tuesday January 20, 2026: Inter vs Arsenal

Wednesday, January 28, 2026: Arsenal vs Kairat Almaty

Arsenal Champions League squad 2025/26

Arsenal’s List A Champions League squad has been registered until the round of 16 in February 2026, when clubs can register a maximum of three new players within the existing limit of 25.

Goalkeepers: David Raya, Kepa Arrizabalaga, Tommy Setford

Defenders: William Saliba, Cristhian Mosquera, Ben White, Piero Hincapie, Gabriel, Jurrien Timber, Riccardo Calafiori

Midfielders: Martin Odegaard, Eberechi Eze, Christian Norgaard, Leandro Trossard, Noni Madueke, Mikel Merino, Kai Havertz, Martin Zubimendi, Declan Rice, Max Dowman

Forwards: Bukayo Saka, Gabriel Martinelli, Viktor Gyokeres

List B submissions, comprised of players born after January 1, 2004 who have been eligible to play for the club for an uninterrupted period of two years since their 15th birthday, can also be made until midnight before each match.

Arsenal Champions League schedule 2025/26

After the league phase, the play-offs are held in February, with the rest of the knockout stage before the final held between March and early May.

Matchday 1: September 16-18 2025

Matchday 2: September 30 – October 1 2025

Matchday 3: October 21/22 2025

Matchday 4: November 4/5 2025

Matchday 5: November 25/26 2025

Matchday 6: December 9/10 2025

Matchday 7: January 20/21 2026

Matchday 8: January 28 2026

When is the Champions League knockout phase?

Knockout phase play-offs: February 17/18 & 24/25 2026
Round of 16: March 10/11 & 17/18 2026
Quarter-finals: April 7/8 & 14/15 2026
Semi-finals: April 28/29 and May 5/6 2026
Final: May 30 2026 (Budapest)

When are the Champions League draws?

Knockout phase play-offs: January 30 2026
Round of 16, quarter-final, semi-final and final: February 27 2026

Champions League 2025/26 format

In a change from the previous group stage format conducted until 2023/24, each team now plays eight matches in the league phase, all against different opponents.

Four of those matches will be at home and four away, with the opponents determined according to four seeding pots split by rankings.

Teams will play two opponents from each of those pots – one against a team from each pot at home and one away. The results decide the overall standings in one league.

The top eight sides in the table qualify automatically for the round of 16. The teams finishing in ninth to 24th will compete in a two-legged knockout phase play-off to reach the last 16.

Teams finishing 25th or lower are out of Europe for the season.

English teams in the Champions League: Why are there six clubs?

Liverpool, Arsenal, Manchester City, Chelsea and Newcastle all qualified as the top five teams in the Premier League.

There were five places for English teams because extra positions are awarded based on Uefa’s co-efficient rankings, which are based on the overall performances of nations across European competition over a season.

Spurs qualified as Europa League champions, despite losing 22 and winning only 11 of their 2024/25 league games and finishing 17th.