Because of the COVID-19 pandemic, the NCAA ruled that the 2020 college football season would not count against anyone's eligibility clock. This means that seniors who normally would have been forced to move on to the next chapter of their lives were given the option to return for one more "super senior" year, if you will.
Trying to keep track of who has, who hasn't and who still might exercise that option for one final ride in 2021 has been a significant challenge, but there have been a bunch of key players who have announced their plans to come back in the fall.