The All-Star outfielder will now go to the team that originally drafted him.
The Nationals may still be looking for a backup catcher and, according to Nick Cafardo of the Boston Globe, remain interested in Kelly Shoppach of the Red Sox.
Major-league clubs have until 4 p.m. today to make trades. Will the first-place Nationals pull off a last-minute deal? Get live updates all day on Nats Insider.
The Atlanta Braves have made a move in attempt to catch the Nationals in the division race.
The Nationals could activate pinch-hitter Chad Tracy from the DL on Tuesday and outfielder Jayson Werth later this week.