Stevens said he likes guys who can play more than one position. That means 4-5. Fits Zizic and the French guy, maybe. But Okafor and probably Noel, 5 only. Neither played 4 well last year, especially Okafor.
Free agents--I can see Horford fitting. He might be the first guy they go after. Maybe Monroe (trade), though not much of a D guy. Maybe Biyombo, for his D. Howard, Whiteside strictly 5s.