"I just felt like they had everything that I needed as far as me getting better and me reaching my ultimate goals," Harrow told Scout.com.
Harrow, who averaged 9.3 points and 3.3 assists as a freshman at N.C. State, said he liked the other three schools he visited, but felt most comfortably with Kentucky's ability to develop guards.
"All the schools were great and all the schools had a lot to offer and I appreciate the opportunity, but I just think Kentucky had the little bit of an edge," Harrow said. "I felt like that was where I would reach that ultimate goal."
Harrow will sit out this coming season and then have three years of eligibility in Lexington.