It seems like any deal sending DJ to the Clippers would result in either Gallinari ($22.6 million next season) or Bradley ($13 million next season, $2 million of which is guaranteed) coming back, and I don't think the Knicks want to take back any future salary.
Unless Wilson Chandler and/or Muscla could be traded right now, but I don't think they can aggregate their salaris with others in order to match DJ's before the trade deadline