If Dortmund could have kept all their players they would easily be the best team in the world under Klopp. Lewandowski, Reus, Götze, Kagawa, Gündogan, Hummels. That's immense technical quality mixed with youthful energy and hunger. Add Klopp's heavy metal no-nonsene direct counterattacking system and it's just deadly. Madrid reject Sahin dominating Schweinsteiger and Lahm is also kinda hilarious.