Simeone has inched him into a free role this season and holy shit has he capitalized. Plausibly the best midfielder in football right now.
Highest assist tally in Europe with 11, head and shoulders above everyone in set piece delivery, orchestrates everything on the pitch for Atletico with his passing play (one touch, between the lines, direct, safe, etc.), and has more intensity than anyone in football. He's literally everywhere: marauding on the left with Siqueira, pressing high up with the forwards, covering the CB's asses in counters, and dictating the play in the center. What makes it even more fun is when he pulls out Xavi-esque turns or cool technical dribbles. Since he's joined the NT, he always plays with complete anticipation for every moment. You can always see him looking over his shoulders or pointing to his teammates to adjust their positioning or ask for the ball.
Simeone's 4-3-3 setup is coming to fruit. It gets the very best out of Koke and Griezmann and their counterattacking transition is better than ever. They are picking up momentum quickly. Even Mandzukic is now on 3 goals in his past 3 games.