That's the second time McGloin quit his job this week.
Connor was a two-time All-American linebacker for Penn State and the program's all-time leading tackler.
The graduate student will have one year of eligibility remaining.
McSorley is listed in the Penn State directory.
The first 2,000 fans will receive a Singleton bobblehead.
McGloin will reunite with former Penn State head coach Bill O'Brien.