[SB Nation: Celtics Blog] - Celtics just signed a key player to a long-term extension

The Celtics have signed Ron Harper Jr. to a three-year, $9 million contract, ESPN’s Shams Charania reported on Saturday afternoon. It’s a win for both sides: Harper Jr. gets his first long-term NBA contract at 26 years old, fresh off the best season of his career. And the Celtics get a hard-playing role player with […]