Is it actually true? We're gonna say probably not. But the fact that the Phillies have owned the Mets since Citi Field opened, and the fact that the Yankees came down like a ton of bricks, concrete, and steel on the dude that tried to pull a similar stunt at the new Yankee Stadium (and the Mets pretty clearly won't be able to do the same), makes this a fail, even if it's just a rumor.
#39. Three Phillies Jerseys Buried in Citi Field