Are the Nationals shopping Span?

The big trade last winter to acquire Denard Span from Minnesota didn't pan out as well as many imagined for the Washington Nationals last season. Then again, not much of anything panned out quite like anyone would have predicted for the Nats in 2013. With Span under contract next season and the team holding a $9 million option on him for 2015, there are now whispers that the center fielder is available on the trade market.