Expect Monaco to line up in their usual 4-2-3-1, with a double pivot shielding the back four and a creative hub behind the striker. Luis wants his full-backs high and wide, stretching Marseille's shape, while the two holding midfielders recycle possession and launch quick switches to the flanks. The wide forwards will tuck in, looking to combine in the half-spaces and feed the striker — it's a fluid, modern setup that can morph into a 3-2-5 in possession. Marseille, likely in a 4-3-3, will try to press high and win the ball in Monaco's half, but that leaves space in behind for Monaco's runners.

The midfield battle is where this is won and lost. Monaco's double pivot — energetic, disciplined — will look to screen the back line and cut off the supply to Aubameyang. Marseille's trio, with Hojbjerg as the anchor, will try to play through the middle, but they can get overrun if Monaco's wide men drop in and create a numerical overload. On the flanks, Monaco's full-backs will push on, and that's where the danger comes from — crosses into the box, second balls, and set-piece situations where Monaco's aerial presence can cause chaos.

Marseille will have their moments. Greenwood cutting in from the right is a genuine threat, and Aubameyang's movement in behind can stretch any defence. But they'll likely sit deeper than they'd like, absorbing pressure and looking for the sucker punch. That's a dangerous game to play at the Stade Louis II, where Monaco's tempo and crowd can suffocate you. If Marseille concede first, they'll have to open up, and that's when Monaco's counter-attacking quality — with pace in wide areas — will knife through them.