This Dec. 24, 2016, file photo shows San Francisco 49ers quarterback Colin Kaepernick talking during a news conference after an NFL football game against the Los Angeles Rams. Kaepernick filed a grievance against the NFL on Sunday, Oct. 15, 2017 alleging that he remains unsigned as a result of collusion by owners following his protests during the national anthem. (AP Photo/Rick Scuteri)
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