Where did you get this info? Also what he makes and his cap hit may be different due to the toxic offer he was given, not sure though. Hoopshype said 6.7 for the current year. I know there is another site out there that may or may not be more accurate but i can never remember where it is. Millsap is definitely worth the money he makes. I would not pay him much, or any more than that.
NBA Reference. Go to Millsap's page and scroll down to the bottom.