[1][2] Just before signing day in February 2015, Koger joined Butch Jones’s staff at the University of Tennessee as a graduate assistant.
In his senior year, Koger made 31 receptions for 361 yards, scored five touchdowns, and contributed 48 tackles and seven sacks.
In early February 2015, Koger was brought on at the University of Tennessee to serve as a graduate assistant on Butch Jones's staff.
[7][8] On February 15, 2019, Koger was hired as an offensive quality control coach for the Green Bay Packers.
On February 11, 2021, Koger was hired as the tight ends coach of the Los Angeles Chargers.