I don't remember Union Berlin joining the Champions League before. This must be their first time I assume. Therefore they are going to be an inexperienced team in the tournament. However I'm pretty sure they will care about it much more than the Europa League. Because they can increase their income significantly by getting positive results as much as possbile.

They need to get lucky with the draw as well though. If they have a really tough group in which all teams look challenging then Union Berlin might not do much. Even if they drop down to the Europa League at the end it would be great for them anyway.