"It’s a long story," he said Tuesday. "I think it’s better if they explained it. I was caught a little bit off guard myself. But like I said, at the end of the day, we were able to resolve it and I’m able to be here and now the important thing is for us to get ready to go, for me to help Tyrod (Taylor) and to get this team ready to go to play Indy."
Cassel indicated there were "teams out there" interested in signing him but did not say how many or which teams reached out.
In returning to Buffalo as the No. 2 quarterback -- Bills coach Rex Ryan said Tuesday that EJ Manuel will serve as the No. 3 quarterback -- Cassel believes he is where he is "supposed to be."
"There’s a lot of factors in life," Cassel said. "First and foremost my family comes first. My wife’s eight months pregnant. And while football is something I do for a living, they’re number one in my life. Obviously there were opportunities to go other places and things like that, but at the same time, when you look at this situation and the hard work that went into it this entire offseason, I thought it was the best place for me."