Hmm. Probably could have guessed at that. All I kept coming up with is Lynn Swann. This is a trick question because Doug Flutie has to be on someone's roster. :D
Flutie was one of the last but this player retired on the 25th anniversary of the USFL's first game.
"Any Government Big Enough To Give You Everything You Want Is Also Big Enough To Take Everything You Have."-Thomas Jefferson