The Redskins have agreed to a one-year contract with Tim Hightower, according to a source. Hightower first broke the news via his official Twitter account, tweeting a photo of himself earlier Sunday in a Redskins hat, along with the message "I'm back." Though Hightower had drawn interest from the Patriots, the Washington Post reported in April that the 25-year-old running back could still wind up with the Redskins.