Isaac Miller won't play for the Colorado football team next season and it's possible that his playing career is over because of a nagging injury to his knee.

The Silver Creek High School graduate has not participated in spring practices, and on Monday, head coach Mike MacIntyre said the hope is simply for Miller to get his knee healthy for his long-term future.

"It keeps nagging and nagging and nagging," MacIntyre said. "He's going to get another surgery on that knee. He will not be able to play this year. He could maybe come back for the (2019 season), but we're not sure. We're going to see how that surgery works.

"It doesn't look very promising for Isaac to be able to play anymore, but he's still looking into everything."

A junior offensive tackle, Miller had a rough time getting and staying healthy during his college career.

Signed as part of CU's 2014 recruiting class, Miller had shoulder surgery and delayed his enrollment until spring of 2015. He also had an illness that caused him to lose a bunch of weight before he got to CU.

After redshirting and getting healthy in 2015, Miller had a great spring in 2016. He was named the Buffaloes' most improved offensive lineman that spring. However, in the annual spring game, he suffered what was believed to be a sprain of the MCL in his right knee.

Miller wound up missing the entire 2016 season because of the knee and was limited last spring.


Dealing with tracking issues with his knee cap, Miller's health was off and on last season. He played in nine games, including four starts at right tackle, but missed three other games because of the injury.

MacIntyre and offensive line coach Klayton Adams have often expressed Miller's potential to be a special player when healthy, and he flashed that at times last season. In all, the 6-foot-7, 280-pound Miller played 390 snaps for the Buffs last season.

The tracking issues have continued, however.

"He's handled it really well mentally," MacIntyre said. "He's so mature and so smart, just a phenomenal guy. It's been tough and he's been pushing himself to be able to try to play. It just got to the point where we're going to have to do another surgery.

"Hopefully he'll be able to just keep being able to walk correctly on his knee."

Miller, who is majoring in integrative physiology and psychology, is set to graduate with his Bachelor's degree in May.

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