Borussia Dortmund faces Athletic Club in a UEFA Champions League game on Wednesday, Oct. 1, 2025 (10/1/25) at Signal Iduna Park in Dortmund, Germany. Here’s what you need to know:What: UEFA Champions LeagueWho: Borussia Dortmund vs. José Mourinho also returns to Stamford Bridge, his home in two spells coaching Chelsea, for his first Champions League game coaching Benfica. In 71 seasons of the European Cup and Champions League, record 15-time title winner Real Madrid never went to Kazakhstan where it plays Kairat Almaty on Tuesday. Pafos will host Bayern in Limassol and Union is staying in Brussels to use Anderlecht’s stadium in the Champions League.