no
1/ He wouldn't have helped us win it all this year.
2/ He would not have signed an extension, he wanted more dollars, so he would have become a FA.
3/ As a FA, we would not have signed him as he's to expensive. You can overpay someone like him if he's the last piece of the puzzle, the only missing link.
But when RR, PP & KG retire or are simply becoming to old, a new championship team needs to be constructed. You don't do that starting by overpaying a limited Center,completely handicapping your salary flexibility do sign another big name to go along with Rondo ( or whoever is he main guy if Rondo is traded).