Heard chose Kentucky after also considering Pittsburgh. The 185-pound Heard rushed for 348 yards and averaged 6.7 yards per carry last season at Nebraska after rushing for 113 yards as a freshman.
"I feel it is the right spot because I feel like I fit in well at the university," Heard told ESPN.
Heard is a native of Youngstown, Ohio, and was a standout at Cardinal Mooney High School, which new Kentucky coach Mark Stoops attended.
"Kentucky will set up the run really well," Heard told ESPN. "They have good players on the outside, three good QBs, a great line and backs. And yes, can't beat being in the SEC."