The Detroit Tigers attempted to outright catcher Omir Santos to Triple-A Toledo, but the catcher refused his assignment to the Mud Hens and became a free agent. Santos had been sent down as the Tigers purchased the contract of Bryan Holaday from Toledo - another catcher. A player is allowed to refuse his outright to the minors depending on his contract and his service time.
It's likely he wanted to go somewhere where a catcher was needed more, especially considering he was sent down for another one. Accoding to MLive.com, it didn't take long for Santos to find a suitor, as he's signed a minor league deal with the Colorado Rockies, to play for the club's Triple-A affiliate, Colorado Springs.
Santos clearly didn't have a problem with playing in the minors, he just wanted to be with an organization where he had the potential to compete and make it back to the full roster as a catcher. He made his debut with the Sky Sox on Tuesday, flying out to right field in his lone at-bat as a pinch-hitter.