Oakland Raiders head coach Jon Gruden said he is surprised that free agent quarterback Colin Kaepernick is still unsigned.
Kaepernick has not played since the 2016 season after protesting the national anthem throughout that season, citing racial inequality and police brutality.
Kaepernick filed a grievance last October against NFL owners for collusion, claiming they schemed to keep him off the football field because of his protests.
"I think there's a lot of intrigue there," Gruden said at the NFL owners meetings. "His performance on the field wasn't very good, on tape. I think, Robert Griffin, a rookie of the year, surprised he's out there.