Boston Mayor Michelle Wu openly criticized the Kraft Group for its handling of a proposed soccer stadium for the New England Revolution in Everett.

The MLS team, New England Revolution, hopes to build a new soccer stadium on the site of an old Boston power plant, but tensions are rising between team leadership and the city leaders in Boston and Everett.

The city and the company run by Robert Kraft, billionaire owner of the New England Patriots and the Revolution, held dueling press conferences Monday. The Everett stadium project began looking more like a proxy fight in the mayoral battle between incumbent Michelle Wu and Kraft’s son Josh,