One factor in Geathers' decision was likely that longtime defensive line coach Rodney Garner took a similar position at Auburn this winter.
Leaving early for the NFL is what both of Geathers' brothers did before him.
Geathers' departure means the Bulldogs will be breaking in a new nose in 2013. Candidates to start at that spot include redshirt freshman Johnathon Taylor and JUCO transfer Chris Mayes.