Alston, a member of the 2018 recruiting class, did not appear in a game while at NU, but successfully completed his coursework in just three years. He was not a major factor in NU's depth chart this spring.
Because the NCAA rules did not count the COVID-affected 2020 football season against Alston's eligibility clock, he'll still have three years of eligibility left.
NU still has nine scholarship players at the position, and 84 overall as of Friday.
Memorial Stadium was once an impenetrable fortress. In his latest Stat Chat column, Sam McKewon looks at the staggering numbers behind Nebraska's home-field advantage in the '90s, and wonders if it can ever be repeated.