Most onlookers would say Williamson is the center in that group. Green has made it clear that he doesn’t view the Pelicans star as a center, regardless of which other four players are on the court. “Zion is not a 5. Let’s take that out of our terminology,” Green said last week during training camp in Nashville. “He can definitely become a good screener and (a big) catching it in the pocket. But we’re still figuring it out.”