Darien will transfer away from Penn State to be closer to his family.
Bates joined fellow starter Connor McGovern as the second Penn State offensive lineman to declare for the NFL Draft on Wednesday.
McGovern, an all-Big Ten lineman for the Nittany Lions, will head to the NFL.
Corley was hired as Penn State's running backs coach in January, but shifted over to wide receivers coach after the hiring of Ja'Juan Seider.
Shareef Miller is foregoing his final year of NCAA eligibility and heading declaring for the NFL Draft.
Although it was far from the exultant victory lap he deserved, the Citrus Bowl might have been the most perfect way for Trace McSorley to ride off into the sunset.