Given 2020 did not count toward eligibility... we technically only have 6 players on the Off / Def depth chart with only 1 year of eligibility remaining (there are 3 on ST):
Foster
Allen
Uwazurike
Hummel
Eisworth
Amos
Technically, the rest could run it back... expect guys like Hall, Purdy, Rose, Kolar, etc. to look at their options / leave before their eligibility expires... but still, 36 of 56 guys on the OFF/DEF two deep have 3-4 yrs of eligibility remaining. That's 64%!
This "extra" year I believe will continue to be beneficial for developmental programs like ISU for the next several years...
If you look at the LB corps for example, Davis (RS SO) / Horne (RS SO) each still have 4 yrs of eligibility left if they choose to use them. Vaughn (RS JR) has 3. So, if all three of them are starting next season, they will each have 2-3 yrs left, but they will each also have 3-4 yrs in the program...