And now, the Clippers and Celtics in the deal that can’t happen, has to happen and/or has already happened before. Just in case, Doc Rivers actually winds up coaching Kevin Garnett, Paul Pierce and the rest of the Clippers, it will mean one thing…. No, not that the Leprechaun will be the next Celtic departing the TD Garden for Staples Center. No, not that the Clippers will put down a parquet floor in Staples to a) make the former Celtics feel welcome, and