After watching a number of Zimmerman's games during the July evaluation periods, Williams visited Las Vegas (Nev.) Bishop Gorman High School on Wednesday. It's clear that many more visits from the UNC coach will follow.
"He told me that I'm a special kid and they're going to 'recruit the dickens out of me' - that's exactly what he said," Zimmerman said.
"He said he's looking forward to getting to know me a lot more and making that relationship stronger."
Zimmerman's initial thoughts on the Tar Heels' program upon receiving the offer?
"They're an amazing school - obviously they have an amazing history," he said. "They do well with bigs as well as point guards in that style - that's a big thing. I'll probably take an unofficial and official visit to see how everything's going."
Though a specific Chapel Hill visit wasn't discussed in Thursday night's phone call, Zimmerman noted: "My parents are already talking about it."
Standing 6-11, 231 pounds, Zimmerman emerged from a stellar summer as Scout.com's No. 1-ranked center in the 2015 class.
After not opting for a post player in the 2014 class, landing an elite big man is clearly a top 2015 class priority for the UNC staff.
"(Coach Williams) was saying he believes that basketball should be inside-out so I'd have a huge part in it. He believes that they can make me the best player that I can be."
Williams cited his history of big men development, most recently making the comparison to Tyler Zeller.
"They always look for big men that can run the floor well and do that type of stuff and he said I fit that perfectly," Zimmerman said.
UNC joins Arizona, UCLA, Indiana, Kansas, Kentucky, Louisville, Michigan, UNLV, Notre Dame, Ohio State, and many others on Zimmerman's offer list.
"Zimmerman ended up getting the nod as the top-ranked center because of his ability to score on the block, rebound, run the floor, and defend. In fact there are no glaring holes in Zimmerman's game. He has competed at the highest level, including the NBPA Top 100 Camp, proving what he is capable of. As a center he dominates down low first and then shows skill to the mid-range.
"The athletic center can score the ball in a variety of ways -- on the block he has a handful of moves, maneuvers well around defenders and is effective over his right shoulder. He can also step out and hit mid-range jump shots and can really run the floor. He's also showed that he is a more than willing rebounder who will mix it up on the glass."