Former NFL player Tim Tebow arrives at the 2014 Vanity Fair Oscars Party in West Hollywood, California, U.S. on March 2, 2014. REUTERS/Danny Moloshok/File Photo

San Francisco 49ers quarterback Colin Kaepernick stands on the field before their NFL pre-season football game against the Denver Broncos in San Francisco, California, U.S. August 8, 2013. REUTERS/Stephen Lam/File Photo

San Francisco 49ers quarterback Colin Kaepernick stands on the field before their NFL pre-season football game against the Denver Broncos in San Francisco, California, U.S. August 8, 2013. REUTERS/Stephen Lam/File Photo

San Francisco 49ers quarterback Colin Kaepernick stands on the field before their NFL pre-season football game against the Denver Broncos in San Francisco, California, U.S. August 8, 2013. REUTERS/Stephen Lam/File Photo

Former National Football League star Darren Sharper appears at the Clara Shortridge Foltz Criminal Justice Center in Los Angeles, California, U.S. on March 23, 2015. REUTERS/Nick Ut/Pool/File Photo

Former National Football League star Darren Sharper (L) and his attorney Leonard Levine appear at the Clara Shortridge Foltz Criminal Justice Center in Los Angeles, California March 23, 2015. Sharper pleaded no contest on Monday to charges in Los Angeles of drugging four women and raping two of them, after receiving a nine-year prison sentence for a sexual assault case in Arizona. REUTERS/Nick Ut/Pool

Former National Football League star Darren Sharper (L) and his attorney Leonard Levine appear at the Clara Shortridge Foltz Criminal Justice Center in Los Angeles, California March 23, 2015. Sharper pleaded no contest on Monday to charges in Los Angeles of drugging four women and raping two of them, after receiving a nine-year prison sentence for a sexual assault case in Arizona. REUTERS/Nick Ut/Pool

Lane Johnson (R) from the University of Oklahoma stands with NFL Commissioner Roger Goodell after being selected by the Philadelphia Eagles as the fourth overall pick in the 2013 National Football League (NFL) Draft at Radio City Music Hall in New York, April 25, 2013. REUTERS/Adam Hunger