Tarvaris Jackson has been released by the Buffalo Bills.

Jackson was acquired by the Bills last September in a trade with the Seattle Seahawks, but never played in the regular season.

Jackson re-signed in the offseason, but the Bills surprisingly parted ways long before the start of training camp.

The Bills have Kevin Kolb, EJ Manuel and Jeff Tuel on their roster at quarterback.

Jim Kelly has announced that he has cancer in his upper jaw.

Kelly revealed three months ago that a  "major cyst" was removed from his mouth and teeth needed to be extracted this year.

"I've had four major surgeries in the last two years," Kelly said. "Major back surgery, plates and screws in my back two years ago. Five months after that double-hernia surgery. Then 12/12/12 at 12 o'clock I had major neck surgery, where they had to replace three disks in my neck and put a plate and six screws in my neck.

"And then a week and a half ago they found a major cyst from my gums to my nasal cavity, and they had to cut that out -- the size of a nickel -- and they had to pull out all of my front teeth."