Brewer announced on social media Thursday that he will be joining the Lumberjacks next season, with two years of eligibility remaining.
Brewer redshirted in 2012 after signing with Texas before transferring to Arizona. He had to sit out the 2013 season due to transfer rules and was buried on Arizona's depth chart behind Anu Solomon and Jesse Scroggins last year.
Brewer appeared in two games with the Wildcats, scoring on a 3-yard run against UNLV, but did not attempt a pass.
He was released from his scholarship at Arizona in January and will be eligible to play immediately at Northern Arizona because he has already graduated.