Basically, de Blasio blocked a plan to build a stadium right next to Yankee Stadium which would have parking and public transportation already set. It would be a world class venue next to an already world class venue Yankee Stadium, where our minority owners play. He's a pizza with a fork, Boston Red Sox loving a**hole of a political. He was probably rooting for the New England Revolution during the home opener.
From Wikipedia:
On June 13, 2013, Bronx Borough President Rubén Díaz, Jr. wrote an open letter to Garber, imploring him to consider the Bronx as an alternative location given the issues surrounding the Queens location, though by this time New York City FC and its owners had taken over the bulk of the work in selecting a location.[9]
The club plans to play at Yankee Stadium for an unspecified number of years.[3] Ferran Soriano, CEO of Manchester City F.C., stated the team "will have to play in a temporary location for two years, maybe three."[10]
On August 29, 2013, plans for a proposed nine-acre complex near Yankee Stadium, between the Major Deegan Expresswayand East 153rd Street, were leaked. Randy Levine, the president of the Yankees, confirmed these reports, but stated that any plans were far from final.[11]
In December 2013, the team and Mayor Bloomberg's administration were close to an agreement over a $350 million stadium near Yankee Stadium. However, Mayor-elect Bill de Blasio, who replaced Bloomberg in January 2014, expressed opposition to the deal, as it involved tax breaks, public financing and a sale or lease of public land. The plan requires buying land currently occupied by a factory, which would have to be rebuilt at another location and demolishing a parking garage, potentially leaving the city responsible for its $240 million debt.