"We've got to be a little bit more even-keeled, regardless of where the 'rankings' may be."
Mingo averaged 13.7 points per game while shooting from 47.7% from the ifeld in his lone year with the Nittany Lions.
Chin-DeGraves will have two years of eligibility remaining.
Herrington becomes Penn State's first addition out of the transfer portal this offseason.
Fink appeared in just 10 games with the Milwaukee Admirals before getting called up to the NHL.
Penn State dropped after two straight upset losses.