Vertessen 45'After thrashing Celtic in midweek, Borussia Dortmund were brought firmly back down to earth as they fell to a 2-0 defeat to Union Berlin. Nuri Şahin's side

Union Berlin will return to their base for a clash against Borussia Dortmund, who are flying high following their 7-1 victory over Celtic.

Borussia Dortmund struck back against accusations of mediocrity with a 7-1 victory over Celtic to gain an early lead in the new UCL Format. Now, this weekend, Nuri Sahin’s men will look to remind Germany that they belong in the title race with a trip to,