PF will depend on the other moves that are made.
If we sign Hayward, we will need to make a trade to clear salary involving Crowder, Smart or Bradley. I expect us to get a big back in one of those deals. Richaun Holmes, Dario Saric could both be good fits.
If the C's can't sign Griffin or Hayward I expect them to retain Kelly. I could see the Celtics going after a player like Gallinari in free agency. If the Clippers lose Chris Paul and Blake Griffin maybe they will trade DeAndre Jordan. Carmelo Anthony could play the 4 for us and make our offense extremely difficult to stop.