Josh Kraft, a local philanthropist and the son of New England Patriots owner Robert Kraft, has formally submitted his paperwork to run for mayor of Boston.

"At some point, when you’re the candidate, you’re going to have to speak for yourself and not just have the consultants do it for you," Wu said.

Josh Kraft, son of the Patriots owner, opened an account with the Office of Campaign and Political Finance to be able to raise funds for what could be a challenge to Mayor Michelle Wu.