Sooners coach Lincoln Riley posted a video to Twitter showing the announcement in front of the team Monday night.
Morris posted his response a few minutes later.
It's been a dream of mine since I was kid. And now I can proudly say, that I'm playing football at The University of Oklahoma on FULL Scholarship! #BoomerSooner— Lee Morris (@BeastLee80) September 4, 2018
Morris, a redshirt junior, was mostly a special-teams player as a freshman in 2016. As a sophomore last season, he played in every game and had two catches: an 18-yard touchdown at Ohio State and a 43-yard TD against UTEP.
Morris was at it again in the season opener against Florida Atlantic on Saturday. In the first quarter, he blocked a punt that Curtis Bolton recovered in the end zone for a touchdown and grabbed a 65-yard touchdown reception from Kyler Murray.
"He's worked his tail off the whole time since he's been here," Riley said. "He's very consistent day in and day out, and when his opportunities have come, whether it's been in some mop-up time against UTEP last year or one of the biggest stages in college football in the Ohio State game. Obviously, some critical plays for us the other day. The moment's never been too big for him."
Riley was asked about Morris' scholarship situation after the win over Florida Atlantic and again Monday during his weekly media conference.
"I think one of those things that's probably a matter of time," Riley said. "I'd love to have had him on even before this, but as much as you want to make sure it's right for the kid, which that's a huge part of it, but it's also got to line up and be right for the program. So once we get those in line, then that's when we'll make the decision."
Morris' father, Lee Morris Jr., lettered for Oklahoma in 1985 and 1986. The younger Morris said after Saturday's game that his father is his greatest inspiration and that earning a scholarship would be meaningful.
"Just to follow in the footsteps and earn one, as well -- it would mean the world to me, my family -- just help us out," he said.
The fact that Morris wasn't already a scholarship player might be surprising at first glance. He looks the part at 6-foot-2 and 212 pounds, and Riley called him "a 4.4 40 guy." But Morris didn't emerge as a star until his senior year at Allen [Texas] High School, when he caught 11 touchdown passes.
"We were shocked, honestly, coming out of Allen, one of the most highly recruited schools in the country, with all the other players they had here," Riley said. "He was a little bit of a late bloomer in high school. There's a lot of guys like that, with recruiting happening so early, that do fall through the cracks. He was one of those guys."