Ken Rosenthal's reporting on FoxSports.com that the Royals are "close" to trading for Tony Pena Jr.  Sounds like they'll be sending Atlanta a pitching prospect, and plan on planting Pena at short to replace Angel Berroa.  Considering the surplus of middle infield prospects the Braves have, as well as the fact that Pena's out of options (both acknowledged by Rosenthal), what would it take to get him in Kansas City?  And how much of an upgrade would he be over Berroa?