Galatasaray vs Union Saint-Gilloise Prediction: David to deliver in Istanbul

Galatasaray have made a fantastic start to their league phase campaign in the 2025/26 Uefa Champions League, winning three (and losing one) of their first four games. Their opponents at Rams Park on Tuesday (17:45 GMT, TNT Sports 4), Union Saint-Gilloise, have experienced the opposite, losing three (and winning one) of their first four.

Below are my Galatasaray vs Union Saint-Gilloise predictions, accompanied by all the latest team news and match odds ahead of this Istanbul encounter.

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New customers only. Deposit via Debit Card & place first bet £10+ (1/1+) on Sports in 7 days. £30 Sports & £20 Acca Free Bets within 10 hrs of settlement. 7-day expiry. Eligibility, payment excl. & T&Cs Apply.

Team News

Victor Osimhen (hamstring), Yunus Akgun (groin), Berkan Kutlu and Kaan Ayhan (both unspecified) all missed Galatasaray's 3-2 victory over Genclerbirligi in the Super Lig on Saturday, and all four look set to miss out on Tuesday.

Mario Lemina, Wilfried Singo and Yusuf Demir all started against Genclerbirligi, but none of them made it to the second half due to injury (all unspecified), making the trio major doubts for the visit of Union-Saint Gilloise.

Eren Elmali has featured in all of Galatasaray's league phase games so far, but he and fellow defender Metehan Baltaci have been handed suspensions after being found guilty of betting violations within Turkish football.

Football Odds

Union Saint-Gilloise saw defender Fedde Leysen (unspecified) forced off with an injury just 12 minutes into their 2-0 Jupiler Pro League victory over Cercle Brugge on Saturday, and he looks unlikely to make the trip to Turkey.

The 22-year-old is set to join Mohammed Fuseini (ankle), Guillaume Francois, Ivan Pavlic and Jens Teunckens (all left out of the Belgian side's Champions League squad) on the sidelines.

Galatasaray vs Union Saint-Gilloise Odds

Galatasaray have won their opening two home games in the league phase, and the Lions are fancied to make it three from three at Rams Park, with odds of 4/7 for a win implying a 63.6% probability of success. Union Saint-Gilloise, meanwhile, are priced at 4/1, or a 20% chance, with the draw available at 16/5.

Both Teams To Score & Total Goals Over/Under + 2.5 - Yes & Over 2.5 @ 5/6

There have been four goals in each of Union Saint-Gilloise's four games in the league phase, with a 3-1 win at PSV Eindhoven followed by heavy defeats at home to Newcastle United and Inter Milan (both 0-4), and a 3-1 loss at Atletico Madrid.

Both teams to score and over 2.5 goals has landed in half (two) of their four league phase matches, and in four of their last seven away contests in all competitions.

Today's Football Fixtures

Three of Galatasaray's four league phase games have featured at least three goals, with BTTS-Yes also landing in two, a 5-1 hammering at Eintracht Frankfurt on September 18 and a 3-1 home victory over Bodo/Glimt on October 22.

The selection was a winner on the weekend as they came from a goal down to beat Genclerbirligi 3-2 at home in the Super Lig, and with several players, including defender Singo and forward Osimhen, missing on Tuesday, they are weakened at both ends of the pitch.

After scoring three goals in Eindoven, and one in their second away match in Madrid, the Belgians will fancy their chances of netting at least once in Istanbul, but the hosts will be eyeing at least a couple themselves against a side that has shipped 12 goals so far; only Ajax (14), bottom on zero points, have conceded more times after four rounds of fixtures.

Anytime Goalscorer - Promise David (USG) @ 11/5

With Osimhen sidelined on Tuesday, Galatasaray striker Mauro Icardi, who has scored seven times in 12 Super Lig appearances this season, including one last Saturday, is the prime candidate in the Anytime Goalscorer market at 1/1.

However, if you're looking for a little more value, you might want to consider Union Saint-Gilloise forward Promise David, who struck 24 times across all competitions in his debut campaign for the club in 2024/25.

This season, the Canadian international has scored six goals in 17 games, including one in the Champions League, the opening effort of his side's victory over PSV on September 16.

David has notched three times in his last five club matches, despite starting just once in that run, last Saturday, as he opened the scoring in the win against Cercle Brugge.

The 24-year-old was also on target last week for his country, coming off the bench to net Canada's second in a 2-0 friendly triumph over Venezuela.

David is a man in form, and that could spell trouble for Galatasaray.