5. Glen Davis - If Big Baby wasn't crying, going to Disneyland to ride the kiddie rides, or playing PF for the Celtics, I think he would make one helluva a FB. Davis played FB in high school, and thank all things good that you weren't a 5'8" safety with acne, who accidentally got in his way while trying to make a tackle.
1. LeBron James - All State as a highschooler, LeBron has said numerous times that he would be a pro football player if he didn't play in the NBA, and I don't think there is an NFL GM who doesn't believe him. At 6'8" approximately 270 plus, with at least 4.5 speed, LBJ could line up at WR, DE, or Safety, and absolutely redefine the sport.