Penn State safety Jaquan Brisker received second-team All-American honors, while punter Jordan Stout and wide receiver Jahan Dotson took home third-team recognition.
Students who haven't uploaded proof of vaccination against COVID-19 by January 10 will be required to get tested weekly.
In a statement, Roberson thanked his coaches for "taking a chance" on him and said he'll look for a new home with three years of eligibility remaining.
A handful of Penn State women's volleyball standouts are reportedly searching for new homes.
Diaz has 24 years of collegiate coaching experience and was most recently Miami's head coach.
Saint's will be replaced by Philadelphia roasting company Elixr Coffee.