The announcement came on Monday afternoon, just two days after the Ducks suffered an embarrassing triple-overtime loss to TCU in the Valero Alamo Bowl on Saturday.
Oregon had held a 31-0 lead at halftime in the game but lost starting quarterback Vernon Adams just before the half ended, then gave up 31 point in regulation before finally succumbing to the Horned Frogs, 47-41.
Addison was responsible for 24 touchdowns while at Oregon with 20 TD pass receptions, three punt returns and one touchdown pass including scoring two punt returns in one game against California in 2012. Addison finished his career at Oregon with 1,937 yards of receiving.
As late as last Thursday, Addison told eDuck.com that he was undecided about his future until after the bowl game was played. There had even been speculation that he wanted to try his hand at playing quarterback in spring workouts.