Perhaps "disgruntled" is the wrong word. Ryan Clady likely isn't happy that he and the Denver Broncos were unable to come to an agreement on a restructured contract (cough, pay-cut, cough), so the team subsequently signed two offensive tackles -- Russell Okung and Donald Stephenson.
And then promptly put Clady on the trading block.
Considering Clady's $10.1 million cap hit for 2016 and the fact that the Broncos have invested two high-round draft picks in the tackle position in the last two years (Ty Sambrailo and Michael Schofield), the writing is on the wall for Clady.