Barrent, who earned his first letter in 2010 after appearing in seven games (primarily special teams), is a native of Clive, Iowa who at one time had given Iowa his verbal pledge before switching to Michigan State.
Coming out of high school, Barrent was ranked by Scout.com as the #27 offensive tackle with a 3-star ranking and played in the 2009 U.S. Army All-American Bowl.
Entering the spring, David was listed as the second left offensive tackle on the Spartans spring depth chart battling senior Jared McGaha.
Spartans head coach Mark Dantonio released the following statement about the loss of Barrent.
"We fully support David Barrent's decision," Dantonio said. "His long-term health is our No. 1 concern."
Barrent had undergone lower-back surgery in December of 2009 and was held out of contact drills the following spring as he recovered.
A mechanical engineering major, Barrent earned Academic All-Big Ten honors during his Spartans career.
In a statement released by Michigan State, Barrent talked about what he will miss most during his time away from the football program.
"I'll miss the camaraderie," Barrent said. "I've made lifelong friendships, but I'll definitely miss being on the field competing with my teammates. I'm thankful for the opportunity to remain close to the program while pursuing my bachelor's degree in mechanical engineering."
Under NCAA guidelines, Barrent has applied for medical disqualification and once his paperwork is approved, he will remain on scholarship working towards his degree while not counting against the Spartans NCAA's 85-man scholarship limit.
Now the question is about Conway and how he is progressing after missing much time during his Spartans career with a neck injury. If the Ohio native is also loss, this will add another hole to be filled along the Spartans offensive line and place a lot of pressure on incoming Junior College recruit Fou Fonoti as well as the other incoming freshmen to step up their game.