Gruden visited Detroit Lions training camp Monday in Allen Park, where his good friend and protege John Morton is the team's new offensive coordinator. Gruden reiterated his desire to return to the sidelines as a coach.

Jon Gruden has pretty much seen it all over the course of his three-plus decades in pro football and the former Super Bowl-winning head coach had some extremely high praise for one of the NFL's current QBs.

Gruden also had a lofty comparison for the talented veteran, who has revived his career with the Lions. The number Goff wears, 16, and his playing style brings memories of Hall of Fame quarterback Joe Montana to Gruden's mind.