Expect Boulogne to line up in their usual 4-4-2, a shape that screams 'safety first'. Two banks of four, a deep block, and a hope that the front two can nick something on the counter. It's pragmatic, but it's also predictable. Against a side like Red Star, who will happily keep the ball and probe for gaps, that flat midfield can get stretched. The wide areas are where Boulogne will suffer — their full-backs will be pinned back, and the wingers will have to track runners all night.

Red Star, in their 4-2-3-1, will dominate the middle of the park. The double pivot gives them control, and the attacking midfielder will find pockets of space between Boulogne's lines. They're not a side that will throw bodies forward recklessly — they're patient, methodical, and they know the goal will come. The full-backs push on, the wide men cut inside, and the lone striker feeds off scraps. It's a system built for grinding down exactly the kind of low block Boulogne will put up.