This season appears to be the year of the big man, with as many as five to eight centers already dangled in trade talks. Among the most talked about is Nikola Vucevic, the 34-year-old two-time All-Star for Chicago, who is on pace for one of the best seasons of his 14-year career. He’s signed to one of the more team-friendly contracts for a player of his caliber, owed $20 million this year and next season. Although the age may scare potential suitors away, his three-point shooting abilities and...