The Ravens entered the market for backup quarterbacks after Joe Flacco tweaked his back last week. Coach John Harbaugh said last week he's had several discussions with Kaepernick during the offseason.
Cass and owner Steve Bisciotti also said the team has reached out to veteran players, Ray Lewis, fans and various sponsors to gauge the reaction to potentially signing Kaepernick, who kneeled during the national anthem during games in 2016 to raise awareness for social injustices.
"We want to get a sense of what the attitude is out there and how Colin would handle it if he were to come, how he'd handle it and how that would change people's views," Cass said, per the team's site.
NFL Network's Michael Silver reported on Saturday that Kaepernick would be excited to join the Ravens, but has had zero discussions with any team about money at this point.