Karathanas is hoping to make his first unofficial visit to Chapel Hill either this weekend for the spring game or over the summer for the Tar Heels' camp. He has already visited Florida, Duke, Tennessee and Vanderbilt.
Although Karathanas is awaiting his first scholarship offer, he has decided to single out two schools as his early favorites.
"I like North Carolina, and Tennessee I liked a lot, too," said Karathanas. "I like North Carolina the state, and [UNC] are recruiting me the hardest. With Tennessee, I love the area around it and [head football coach] Phillip Fulmer was awesome, he was real nice."
During Scout.com's All-American Combine, Karathanas ran the 20-yard shuttle in 4.72 seconds and the 40-yard dash in 6.19 seconds. He also looked solid in one-on-one trench drills against several premiere defensive linemen.
A 6-foot-3, 266-pounder, Karathanas stars at offensive tackle for Pfafftown (N.C.) Reagan, but is being recruited as an offensive guard.