Ok so we are likely to see Haaland above 200% EO* in many rank tiers this gameweek! Which means even if you captain him, his points won't help your rank.
*EO = effective ownership = ownership accounting for captaincy + benching.
If everyone owns & starts a player but nobody captains -> 100% EO (effectively all own 1 version of the player)
If everybody captains a player -> 200% EO, everybody owns 2 of him
If everybody triple captains a player -> 300% EO, they own 3 of him