Apparently this is a possibility. I doubt it's probable, but I for one would be enthralled to have a professional outdoor soccer team come to Baltimore.

A few details:
The Maryland Stadium Authority commissioned a study on building a stadium for either a pro or semi-pro soccer team in Baltimore. The study concluded that building a stadium in Westport for a pro soccer team would be the best option. I believe the study was specifically considering the possibility of bringing DC United to Baltimore.

DC United currently plays at RFK, but they desperately want a new stadium. There is little reason to believe it could happen in or around DC anytime soon. The have acknowledged the study and intend to

From the President and CEO of DC United:
"We appreciate the interest that Baltimore Mayor Stephanie Rawlings-Blake and the City of Baltimore have shown in our team and potential stadium, and will continue our conversations as we work toward the best possible long-term home for D.C. United."

Check out the links below for more info.

I know there are probably some political hurdles for this as well. I'm not too knowledgeable on the politics of something like this. Anyone else have additional information or insights?