Kaepernick said he hasn't been broadcasting his desire to work out with any of the league's 32 teams because he doesn't want to be a distraction and that he wants to be judged only as a football player. He originally began kneeling during the Star-Spangled Banner to protest police brutality against minorities in America.
Kaepernick has continued to pursue charitable endeavors even while off the field. He opted out of his 49ers contract after the season, although he was informed he would have been cut regardless.
Vice President Mike Pence (pictured above) left an NFL game on Sunday due to decisions by some players to kneel during the national anthem.
Kaepernick's new stance will come as a surprise to many.
He kneeled during the national anthem past year as quarterback for the San Francisco 49ers, sparking an ongoing nationwide debate that has led even Donald Trump to offer an opinion.
Earlier this week, Tennessee Titans tried out numerous veteran quarterbacks as they look for a short-term replacement for the injured Marcus Mariota.
"I left today's [Indianapolis] Colts game because @POTUS and I will not dignify any event that disrespects our soldiers, our Flag, or our National Anthem", Pence wrote on Twitter. Pence acknowledged that right in a statement but contested that it wasn't too much to ask for them to stand to respect the country and the flag.