"I'm excited to return for my senior year," Mannion, a two-time team captain, said. "I weighed the pros and cons of making myself eligible for the draft with my family and current coaching staff, and came to the conclusion that I have decided to continue my career with my teammates at Oregon State.
"I also want to thank Beaver Nation for all of the support I have received during my career; playing in Reser Stadium for another season had an impact in my decision."
Mannion chose not to join his favorite target, Beavers wide receiver Brandin Cooks, in jumping to the next level after a wildly productive season. He set the Pac-12 single-season passing record with 4,662 yards in 2013 and will enter his senior season needing just 1,839 yards to break the league's career mark -- set by former USC quarterback Matt Barkley.
According to the school release, Mannion received a third round grade from the NFL Draft Advisory Board.