James White announced his retirement from the NFL on Thursday.
White re-signed with the New England Patriots on a two-year deal, but is on the team's physically unable to perform list. White suffered a hip injury last September that ended his season.
White, 30, has spent his entire eight-year career with the Patriots, who selected him in the fourth round of the 2014 draft out of Wisconsin.
"James White has always been one of the most reliable and dependable players on the field," Patriots owner Robert Kraft said in a statement. "He's a soft-spoken leader who has led by example ... As great of a player as James has been for us, he's an even better person. He is a man of great character and integrity and earned everyone's respect through his work ethic, professionalism and positive daily demeanor."