"We were concerned about him qualifying but he did a solid job, getting four A's and two B's. He's turned into a man this past year. He was a kid who was kind of lost. But the past year he's kind of found himself. He's ready to go there and compete."
Ryan Broyles will be the Sooners' No. 1 receiver. But who fills the other wide receiver roles will be determined during two-a-days and the non-conference schedule.
Besides McCay, other candidates include: Dejuan Miller, Brandon Caleb, Cameron Kenney, Jaz Reynolds, Mossis Madu and Kenny Stills
Grunhard said being part of a college program like OU will provide stability the 6-foot-4, 215-pound wide receiver with 4.5 speed hasn't had since middle school.
"A lot of people have helped Justin but he's the one who has worked hard to be in this position," Grunhard said. "Now that he'll have his own dorm room, and be part of a program like OU, I'm confident he'll take ownership and thrive."
Justin has an older brother and younger sister. But it was Justin who gave a eulogy at his father's funeral. He wanted people to know how much his father meant to him, how lessons his father taught him will influence him the rest of his life.
"He was a fighter no matter what," Justin said. "Even when he got real sick he'd still go to work and help me work out. He was tough. His main thing was to work hard and give it your all. That's what I'm going to do in everything I do."