The action needs to be covered in a blazingly intense way. As you mentioned, it should have the same charged back-and-forth of a great sword fight with all its charming chivalry and banter, like in the old Three Musketeers and The Princess Bride. Unexpected camera angles, moves and positions will really keep the momentum at full throttle. And close-ups showcasing the details of muscular bodies giving it their all will add an intimate and powerful textural layer to the story. I like the rawness and immediacy that a handheld camera can bring to a story like this. We might even want to explore the POV of the ball at times. A sweeping overhead crane or drone shot will be great for capturing Messi’s flying header that ricochets off of the express train speeding through the station..