Multiple outlets revealed Friday that South Carolina DB Javon Charleston was listed in the NCAA transfer portal. Charleston took to Twitter to explain Saturday that transferring is his only option to continue playing football due to an error by compliance in the South Carolina athletic department.

“Compliance mis-classified me and surprisingly realized it at the end of my season(career).. I took a few classes online out of high school in order to transfer into USC and that apparently started my D1 clock early.. My only way to play my last year I am forced to transfer,” Charleston wrote on Twitter.

There is obviously a lot to unpack in this unfortunate situation. Included in Charleston’s tweet is a screenshot outlining the NCAA’s Division I five-year clock (five years to play four seasons). Charleston is academically still a college student, but his five years of Division I eligibility appear to be up now that the 2018 season has concluded.

Charleston missed the final six games of South Carolina’s 2018 season due to a foot injury. His bio on the South Carolina website (which hasn’t been updated since he revealed the error) says he joined the program in 2015 as a walk-on true freshman and redshirted that season. Charleston graduated from Warren Township High School in Gurnee, Ill., in 2014.