McAdoo, a 6-foot-7 220-pound defensive end from Antioch (Tenn.), also holds offers from Kentucky, Mississippi, South Carolina, Tennessee, and Vanderbilt.
Blake returned to Antioch earlier this week.
"I guess he wanted to see how big I was," said McAdoo. "Because the day he came by I wasn't at school so he only got to see what I look like on tape."
Schools from all over the nation have also visited Antioch to evaluate McAdoo.
Taking all the attention in stride, McAdoo isn't naming any favorites.
"I don't have a favorite school; I just go by what school shows me the most love and interest," said McAdoo.
While he's still researching UNC, McAdoo has heard a lot of positive things thus far.
"I think well of North Carolina, because of their coach," said McAdoo. "I've heard so much about their head coach, Butch Davis. I heard about what he did when he was at Miami.
"I also heard about North Carolina's academics."
McAdoo will begin to eliminate schools during his senior football season. Shortly thereafter, he plans to make a verbal commitment.
"[I'll be looking at] graduation rates and am I going to get playing time as a freshman," said McAdoo.
In the meantime, McAdoo will unofficially visit interested schools over the summer. His list of destinations includes Ole Miss, UNC, South Carolina, Tennessee, and Vanderbilt.
McAdoo plans to camp at UNC.
"[Blake] wanted me to come down on June 2nd, but I'll probably be going to the second camp," said McAdoo.
Last season, McAdoo earned all-area and all-district honors after collecting 36 tackles including 13 sacks and 12 tackles for a loss. He also played tight end for Antioch, where he was mostly used as a blocker.