AP

A concussion suffered in August forced linebacker Nick Roach to miss the entire 2014 season for the Oakland Raiders.

The injury may keep Roach for another full season as well.

According to Vic Tafur of the San Francisco Chronicle, Roach is still having headaches related to the concussion and is not expected to return to the Raiders for the 2015 season.

“That decision is up to Nick and the medical staff. I am not going to rush him to play when mentally he’s not ready,” Raiders general manager Reggie McKenzie said.

Roach suffered his concussion against the Green Bay Packers on August 22. He briefly returned to limited participation in practice before being shut down for the year in October. Roach had come off a career-best season in 2013. He led the Raiders with 112 tackles and had 5.5 sacks, an interception and four forced fumbles.