Roberson spent three years with Penn State before transferring to UConn.
The Nittany Lions have been No. 12 for the entire season.
Cael Sanderson said Nagao had "a major surgery" and won't return "anytime soon."
Cross has only played in five games over his three-year career.
Lanning spoke about Penn State, Tyler Warren, and more in a 30-minute Zoom call.
Winning the Big Ten Championship could mean earning a No. 1 overall seed for Penn State football.