According the the Nationals website, the Nats have expressed an interest in dealing for D-Backs outfielder Gerardo Parra.
In the event of a deal, Parra would hypothetically become the Nats starting centerfielder since the tentative plans were for Washington to start
Jason Werth there. Perhaps the Nationals are not comfortable in Werth in center–although for his salary he should play BOTH right field and center at the same time–and feel that pursuing the now position-less Parra is the best option for them to salvage their outfield. What remains to be seen is what the Nationals could offer for Parra and if the D-Backs are even interested in trading him. The article seems the suggest mediocre lefty John Lannan, however with full rotation and Skaggs and Bauer waiting the wings, that deal would make little sense for the D-Backs.
If anything, the D-Backs would likely entertain offers for higher level prospects to help fill the void in the system lost when Collin Cowgill and Jarrod Parker were dealt to Oakland in the Trevor Cahill deal. Stay tuned for updates.
Follow me on twitter @detsportsczar
Follow Venom Strikes on twitter @venomstrikes