For better or worse, the answer is zero. There's no need to sign anyone because Boston's got to figure out what it has first. Are Sully and Marshon Brooks legitimate starters? Is Jeff Green a potential all-star? Can Rondo be the top dog? Can Stevens handle the NBA? Is Melo a bust? Is Olynyk a 4 or a 5? Can Avery become a consistent scorer? What style is the team going to play? What can Ainge get for Kris Humphries? Is this team bound for the lottery or the Eastern Conference playoffs?
Even signing Oden to a one-year deal would probably be the wrong move because those minutes should be going to KO, Melo and Colton. It makes for a boring off-season but I don't see any reason to plunge into this free agent market.
Mike