Looks like the NFL is paying him off.
Via NY Post:
It looks like the NFL blinked.
An agreement was made in the Colin Kaepernick collusion case, his attorney, Mark Geragos, announced on Twitter. Geragos didn’t include any details of the settlement, but did say there had been active dialogue between the two parties, leading to an agreement. The NFL released a similar statement, citing a confidentiality agreement as to why no details would be given.