Union SG vs Marseille prediction, H2H and probable lineups – December 9, 2025
One of the clashes of the Champions League 2025/26 matchday 6 will take place on Tuesday at Lotto Park in Brussels, where Belgian side Union Saint-Gilloise will host French giants Marseille. Here’s a bet on the outcome of this clash with promising odds for success.
Match preview
The Belgians responded confidently to their defensive woes, securing a narrow win over Galatasaray and keeping their first clean sheet of the tournament. Before that, Union had conceded in nine consecutive European matches, which was the main reason behind their inconsistent results. However, that victory has boosted their confidence and the club still has a shot at advancing from the group.
At home, Union alternates between dazzling performances and unexpected setbacks: in their last 10 European home games in Belgium, they’ve won only twice, losing the last three without scoring a goal. On the other hand, the Belgians have never lost to French clubs in Europe, including a win over Nice last season. Historically, this rivalry runs deep: back in 1962, Union already defeated Marseille on their home turf.
The French side approaches this decisive match with a chance not only to progress to the next stage, but also to claim their milestone 50th European victory. Their recent win over Newcastle showcased their character and experience, as they came from behind to secure three crucial points. Marseille is capable of challenging any opponent, especially with their attacking leaders returning to form.
Nevertheless, their away form in the Champions League remains their Achilles’ heel—three consecutive away defeats speak for themselves. Moreover, they’ve squandered leads in both away games in this campaign. Yet, Marseille boasts a perfect record against Belgian teams in European competitions, which could play a significant psychological role in this encounter.
Probable lineups
- Union SG: Scherpen, Mac Allister, Burgess, Sykes, Boufal, Zorgane, Van de Perre, Niang, Ait El Hadj, Rodriguez, Akinpelu
- Marseille: Rulli, Pavard, Balerdi, Palmieri, Weah, O’Riley, Højbjerg, Gomes, Paixao, Aubameyang, Greenwood
Match facts and head-to-head
- Marseille has never lost to Belgian teams in European competitions, maintaining a 100% record.
- Union SG has failed to score in each of their last three home Champions League matches.
- For the first time in over 60 years, these teams meet again—their previous encounter was in 1962.
Prediction
Marseille’s edge lies in their experience, motivation, and attacking depth. Despite their poor away record, the French side is capable of capitalizing on Union’s still-shaky defense. Expect the visitors to control proceedings and claim a hard-fought but vital victory.
