The defensive tackle discussed the trade on the Double Coverage podcast, hosted by the New England Patriots' Devin and Jason McCourty. Casey was a former teammate of Jason McCourty with the Titans.
"The part that is so crazy is that you give so much to them. Especially when you come up on free agency and have opportunities to go somewhere else. Especially the way it was going when we were there, 2-14, 3-13," Casey said to Jason McCourty. "Those were some rough times. When you're a loyal guy and you feel like things are going in the right direction and you're that centerpiece, you got no choice but to fight it through. My mindset was to stick it out and things would get better.
"For us to get to that point to get better and to be a main focus of that and then you just throw me away to the trash like I wasn't a main block of that ... Coming off an injury the year before and playing the whole season for ya'll. No complaints, I did everything you wanted me to do and you throw me like a piece of trash. At the end of the day, none of these businesses are loyal."
Casey was a five-time Pro Bowler during his tenure with the Titans. He was named a second-team All-Pro in 2013 after he posted 10.5 sacks. Casey signed a four-year, $60 million contract extension with Tennessee in 2017.
The better days that Casey referred to were capped off by a magical ride to the AFC Championship Game last season. Unfortunately, he won't get the opportunity to build on last season's success. The Titans cleared up over $11 million in cap space by trading Casey to the Broncos for a seventh-round draft selection.
Casey said he was working out when he got a call from his agent that the Titans were going to shop him to other teams. He was disappointed that he didn't hear the news from the team.
"It was a blow to the heart because I would have thought that one of them would have hit me up," Casey said. "The part that hurt me the most was that I didn't get a call until like 30 seconds before the trade went down. For three or four days I had some moments where I had to tell the wife to give me a minute and I had a lot of tears come out of there."
The Titans open the season with a trip to Denver to face Casey and the Broncos on Monday Night Football.