Rihanna-loving rapper Drake -- whose nasty note to Chris Brown sparked a VIP-room melee -- is going to be arrested for throwing a bottle at his rival.
Drake is expected to be charged with reckless endangerment, sources said, after a witness told cops the hip-hopper hurled the projectile during the 4:00am local time mayhem Thursday at the SoHo hotspot W.i.P.
The witness did not believe Drake hit anyone with the bottle.