Anthony Davis

San Francisco right tackle Anthony Davis announced his retirement on Friday (June 5), making him the fourth player on the team to call it quits this offseason.

The 25-year-old joins linebackers Patrick Willis, 30, and Chris Borland, 24, and defensive lineman Justin Smith, 35, in retirement.

“After a few years of thought, I’ve decided it will be best for me to take a year or so away from the NFL,” Davis said in a statement. “This will be a time for me to allow my Brain and Body a chance to heal. I know many won’t understand my decision, that’s ok.

“I hope you too have the courage to live your life how you planned it when day dreaming to yourself growing up. Your Life is Your dream and you have the power to control that dream. I’m simply doing what’s best for my body as well as my mental health at this time in my life.”

Davis, who was the No. 11 overall pick of the 2010 draft, suffered a concussion last season, which he called scary. It took place in Week 11, when the Niners took on the New York Giants, where he says he took a “spinning elbow” to the head late in the game and suffered the injury. More than two weeks later, he said he was still feeling the effects.

“It’s scary when your brain’s not working the way it’s supposed to,” Davis said at the time, describing a “white fog” he had to fight through.