"John and Tyler certainly considered their options, but in the end it came down to how much they enjoyed not only college basketball, but being part of the collegiate experience both on and off the court," Williams said. "I spoke to about 10 NBA teams on their behalf and gave them that information, but their individual decisions are less about the NBA and more about what they wanted to do right now and the experiences they are enjoying."
Williams said Harrison Barnes is still weighing his options.
The freshman wing is a projected top five pick.
"Harrison is not as far along in his decision-making process as were Tyler and John," Williams said. "I am still gathering information on him from NBA teams and hope to provide him with all of that information by the end of next week."
Zeller averaged 15.7 points and 7.2 rebounds last season while Henson averaged 11.7 points and 10.1 rebounds.
They helped North Carolina win the ACC and make the Elite Eight of the NCAA tournament.