South Carolina cornerback Devontre Parnell picked Louisville over Kentucky earlier this week, and the 6-foot-6, 305-pound Manley followed suit with his commitment Wednesday, though he didn't publicly announce his decision until Saturday afternoon.
"I picked Louisville because we're going to win championships," Manley told Scout.com. "That's where I wanted to be. I like the coaches and the program in general. I like the program because it's on the up. They turned the program around since Coach Strong got there. They are winning games. And I've got family that lives up around Louisville. I have places to go when I go up there."
Perhaps the state's top offensive lineman, Manley is rated the No. 47 offensive guard prospect in the nation by Scout.com. The fourth offensive lineman in Louisville's recruiting class, Manley joins three-star linemen Sid Anvoots and DeAndre Herron and T.C. Klusman. The Cardinals have definitely gone big up front, as all four linemen stand taller than 6-foot-4.
A monster prospect, Manley increases Louisville's size in the trenches.
"His size is his biggest asset. Typical of many young lineman, his improvement will hinge greatly on how he improves his feet and ability to move," Bowling Green coach Kevin Wallace recently told Scout.com. "I would like for Joe to be a consistently dominant force on our offensive line. He needs to be someone we can depend on every snap.
"Joe has great potential. Currently, he is a work in progress, but I think a college weight room, added maturity, and learning to compete at a high level gives Joe a chance to be a better player down the road."
Manley is rated the state's No. 2 prospect behind Auburn commit Zeke Pike by Scout Kentucky Preps.
"Joe Manley is a massive young man who uses his body well as a blocker," said Scout.com's Brian Eldridge. "Manley needs to continue working on reaching the second level, blocking linebackers and safeties, but he does a good job when he's needed to pull on run plays and reach the other side of the line. While Manley's footwork can improve, he is already adept at maintaining his balance and keeping defenders off his body."
Besides Louisville and Kentucky, Manley also had offers from Vanderbilt, Colorado, Illinois and Western Kentucky.