The Jaguars announced on Twitter today that linebacker Clint Session has been placed on injured reserve, which ends his 2011 season. LB Kevin Bentley was signed to bring the roster back to 53. Clint Session, a free agent acquistion in his first year with the Jaguars, accumulated 30 tackles, a sack and a forced fumble in 2011 after a slow start to the year.
The nature of his head injury has yet to be released, but it was thought to be a concussion when he left Sunday's game against the Browns. If it is a concussion the Jaguars could just be playing ultra conservative at 3-7 and looking towards the future rather than rushing him back. Perhaps if they were a .500 team or better, this wouldn't be an injury that would end his season. But that's purely speculative until the nature of his injury becomes clear.
Bentley is a 10 year veteran that will fill in for Session on the roster and has played in 132 career games with 37 starts.