Westerman, a product of Hamilton High School in Chandler, chose Auburn after a heavy recruitment from schools like Texas, Oklahoma, Alabama and Florida.
The 6-foot-5, 298-pounder redshirted in 2011, and played sparingly this season, appearing in three games and starting one. He had been bothered by an ankle injury as well.
Westerman was rated the third-best offensive tackle prospect in the nation out of high school by Rivals.com and second by ESPN.
The ASUDevils.com report states that as of Thursday morning, ASU has not received a scholarship release for Westerman from Auburn.