Aaron Katersky of ABC News acquired Kaepernick's court filing suggesting that, "based on [Kaepernick's[ exceptional career performance, his age, and all other objective metrics, Mr. Kaepernick was an ideal candidate—and, in fact, the best-qualified candidate—to fill the vacant starting quarterback positions on many NFL teams, or at the very least, the numerous vacant backup positions.
The filing goes on to suggest that NFL teams, "exhibited unusual and bizarre behaviour regarding Mr. Kaepernick's prospective employment. Multiple NFL head coaches and general managers stated that they wanted to sign Mr. Kaepernick, only to mysteriously go silent with no explanation and no contract offer made to Mr. Kaepernick."
http://www.tsn.ca/reports-kaepernick-filing-grievance-against-owners-for-collusion-1.885371