There is much more from him on this http://espn.go.com/page2/s/tmq/030916.html">here. But this is the important paragraph:

If the NFL starts bringing in teenagers, what will happen is exactly what's happened to pro basketball. Quality of play -- by far the most important aspect of NFL popularity -- will spiral downward. Immature kids will boast and strut for the cameras but refuse to listen to coaches, turning off the paying customers who earn far less than the boasting kids. Experienced veterans who know what they're doing will be thrown overboard for sulking teenagers who end up busts, accelerating the decline in quality of play. Since football requires more cooperation than any sport, and teenagers are by nature uncooperative, fumbles, interceptions and blown plays will increase until every team looks like the Arizona Cardinals. The goose who lays the golden eggs will be tossed into the Crock Pot.

For one thing, I'd argue that it's not Clarett's responsibility to save the NFL from doom--nor is that a reasonable basis for the law. Plus, I think that, unlike the NBA, the owners will refrain from drafting the kids in the early rounds because the risk is so great.

---