I have two comments regarding Lucho versus Simeone:
1. Lucho made a big mistake when he challenged the football gods by bragging that his team was the best, telling that he was only afraid of Barça but that there was zero chance his team would face Barça. Lesson: Hubris never a good idea!
2. Simeone seems to be able to prepare his team such that they get out of the starting blocks at top speed and dominate the first 20 minutes, even against Barça. Lucho must find a way to counter this strategy! Atletico always score the first goal, and then they can afford to sit back and do what they do best - DEFEND! In addition, he must have a secret way to turn GK'so into Superman: both Courtois and Oblak turned into amazing performers under Simeone.