The Patriots released tight end Kellen Winslow on Thursday, a league source confirmed, just eight days after he was signed by the team.

ESPN Boston reported that Winslow asked for his release and it was granted by the team.

The 29-year old Winslow has had health problems that began early in his career with the Browns. He also contracted a staph infection that affected the health of the knee. It is believed his chronic knee pain may have been too much at this point.

Winslow, who first signed with the Patriots last week, played a few snaps against Baltimore on Sunday night and had one catch for 12 yards.

He said when he signed that he was “always” in pain when he played and that he took pride in not missing games despite the pain.