Knox, a 6-foot-2, 235-pound tight end, was informed of Mogridge's visit during their weekly phone conversation on Monday night.
"My relationship with Coach Mo' is great," Knox said. "It was great before [receiving] the offer, but it has really picked up. I've been talking to all the [UNC] coaches and I've been getting a lot more emails."
Since receiving scholarship offers from Louisville and UNC a week ago, Knox has seen a boost to his recruiting stock.
"The recruiting process is really heating up," Knox said.
Although no new offers have materialized, NC State and Wake Forest have picked up their recruiting efforts. A Wake Forest coach visited Concord on Thursday.
Despite the increased attention, UNC remains as Knox's clear cut leader.
"It's been my childhood favorite," Knox said. "I remember growing up it was my dream to play for North Carolina. When they offered me, it was a dream come true.
"I love the relationship with the coaches, and the type of offense and how they use their tight ends. They often use more than one tight end in a set and their tight end is often the primary [passing option].
"I'm really leaning towards North Carolina, but I'm not going to commit anytime soon. I'm trying to enjoy the recruiting process."
Regardless, it will take a lot for another school to dethrone UNC.
"Being my dream school will affect my decision a lot," Knox said. "It's going to be really difficult for another school to lean me away from UNC right now."
Knox is unsure when a verbal commitment will take place.
In the meantime, Knox will continue visiting schools. Next week, he will travel to Louisville. He's also considering a trip to Tennessee before the end of the spring. Over the summer, Knox plans to camp at UNC, NC State, Tennessee, and Wake Forest.