He can back him up and they won't miss a beat, very similar players. 5 mil is a bargain for a backup like JJ, as others have said, we're paying 3 mil for Joel freaking Freeland.
Will Hickson be content sitting behind Faried? I'm guessing he thinks he has a shot at starting, since Faried is so limited offensively and isn't a good defender. Hickson is a much more polished NBA PF.