The Cleveland Cavaliers spent the last few months telling interested teams Larry Nance Jr. wasn’t available in a trade. That didn’t stop the calls from coming. The first two post-deadline games spotlight why. Why playoff contenders — New Orleans, Miami, Dallas, Boston and Philadelphia — were desperately trying to pry him away. Why the Cavs were determined to keep him, turning down at least one offer with multiple late first-round picks. Why the organization considers him a core piece despite being a 28-year-old part-time starter (coming off the bench when Kevin Love is healthy) on a kid-friendly roster.