The Washington Redskins have agreed to sign running back Adrian Peterson to a one-year contract, ESPN reports.

The teams’s loss of expected starter rookie Derrius Guice to a season-ending ACL tear, combined with injuries to backups Samaje Perine and  Byron Marshall in the first two preseason games, forced the team to look elsewhere. Perine is reportedly not expected to miss much time, while Marshall might be able to return within four weeks.

The only three healthy running backs remaining on the roster are Rob Kelley, third down back Chris Thompson and Kapri Bibbs, who has been fighting to make the roster this preseason. The 33-year-old Peterson was traded from Minnesota to New Orleans last season after the Vikings refused to extend his contract, but he was traded to Arizona on Oct. 10.

Peterson, who ranks 12th on the NFL’s all-time rushing list with 12,276 yards, rushed for 448 yards and 2 touchdowns in six games with the Cardinals but he was released at season’s end. According to ESPN Stats & Information, among players with at least 150 rushes over the past two seasons Peterson has averaged only 3.1 yards per carry , the third-fewest yards per rush attempt in the league during that stretch.

The Redskins open the season on Sept. 9 at Arizona.