The Red Sox do not need John Farrell so much as they need someone like him, which admittedly may be trickier than it seems. Farrell has the polish and intelligence to deal with the Red Sox owners, administrators, and media. He has the credibility and presence to deal with the players. And he communicates clearly, directly, and, when needed, sternly.
What Farrell would not have in Boston, at least at the moment, is the players he needs to contend with the iron of the American League, which really should be the focus of the Red Sox this offseason.