Iowa freshman offensive lineman Ezra Miller will have to medically retire from football, a source confirmed to 247Sports.

Rivals reported the news first, and mentioned that the Miller will have to retire due to ongoing back issues.

Miller will continue to be enrolled as a student at Iowa, but will not be playing football anymore for the Hawkeyes.

The Ridge View alum, and former four-star recruit out of Holstein, Iowa was a big get for Iowa in the 2019 class. He also held an offer from Iowa State and interest from Minnesota.

247Sports' National Writer Charles Power projected Miller to be a future 4th-7th round pick in the NFL Draft, and compared him to Indianapolis Colts offensive lineman Jack Mewhort.

"Broad, square-shouldered frame," wrote Power. "Has very good height. Carries much of his weight in his upper body and midsection. Plays in a run-first offense and is best as a drive blocker at this point. Does a nice job using his strength and size to get a push against smaller defenders. Works to finish blocks and plays with some attitude. Looks to have good awareness and quickly recognizes defensive line movement and stunts. Is an average to below average athlete for the position and will need to improve his quickness, explosiveness and flexibility. Doesn’t have a lot of experience as a pass blocker. Could move inside at the next level given his size and skill set. Projects as a likely Power 5 starter. Could develop into a late-round NFL draft choice."

Miller was one of the four scholarship offensive linemen in the 2019 class along with Noah Fenske, Tyler Endres, and Justin Britt. Britt was the only freshman offensive lineman along with Nick DeJong to appear in a game this year.

Miller was the first commit for the Hawkeyes in the 2019 class. He visited Iowa a record 29 times during the recruiting process.

"But I did tell him the visit I'm looking forward to the most is in January when he shows up here for class," Ferentz said of Miller on 2019 early signing day. We have six guys coming early, and Erza is one of those guys. He's a delightful young guy. He's got a great attitude, very positive. It's hard for him not to stand out a little bit with his size. But he's just got a great attitude. He's worked hard in camp. We saw a real jump. He came back in camp again last year, which tells you a little bit about him, too, but he's got a good attitude. He works hard, and he's just scratching the surface, so we're eager to get him here.

Miller did not appear in any games as a freshman for Iowa.

According to 247Sports, Miller was a four-star recruit, the No. 271 player nationally, and the No. 25 offensive tackle.