Atletico host Milan defending a 1-0 lead.
"They need to score, and, naturally, they will be playing attacking football," Simeone said of AC Milan. "Accordingly, our game will be different.
"We need to try to control the game. I think the key will be in the intensity that we put in midfield.
"If we can be strong then we can play the game we need.
"We need to be focused and careful not to give away many spaces as that would only benefit our rivals."
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