Kick-off on 09.03.23 19:45.

The team from Köpenick eliminated Ajax in the previous stage. Initially, the Iron Ones secured a draw in Amsterdam, although they had the chance to win, a disallowed goal due to a rule violation resulted in a 0-0 score. On their home turf, the Union achieved a confident victory thanks to a goal and an assist from Juranović, ending the match 3-1. The Royal Club finished at the top of Group D in the tournament's group stage, thus skipping the round until the Round of 16.

The match between Union Berlin and Union Saint-Gilloise can be watched online. The two sides battled in the playoffs last fall for a spot in the next round. In Germany, the opponents faced each other in September, with the visitors taking home three points in a 1-0 victory. The representative from the Bundesliga also hosted Braga, winning 1-0, and Malmö, winning 1-0, in the Europa League. Knoche has scored three goals and provided an assist in the current competition. The team from the capital of the FRG are having their most successful season on the international stage in their history.

Previously, the team from Köpenick only participated in the UEFA Cup in the 2001/02 edition, where they were eliminated in the Round of 32 by Bulgarian side Litex (0-2, 0-0). Additionally, the Iron Ones failed to advance from the group stage in the 2021/22 Conference League. Watch the match between Union Berlin and Union Saint-Gilloise online.

In Group D, the Belgians visited Malmö (2-0) and Braga (2-1). Boniface and Teuma collected four points in the goal+assist system (3+1 and 2+2). In the third qualifying round of the Champions League, the representative of the municipality of Saint-Gilles lost away to Rangers (0-3). While the Berlin team had played four matches in the UEFA Cup before this edition, the Royal Club last competed in European competitions prior to the creation of the tournament.

From 1958 to 1964, the team from Brussels participated multiple times in the Inter-Cities Fairs Cup. In the 1958/60 campaign, they progressed to the Round of 16 after defeating the Leipzig national team (6-1, 0-1). Union also reached this stage in the 1962/63 season but was eliminated by Dinamo Zagreb (1-2, 1-0, 2-3). Watch the clash between Union Berlin and Union Saint-Gilloise online.