I think Reddick is a serious possibility. He has enjoyed playing against Boston, and he's very good friends with Kyrie. He mentioned two years ago (?) about how much of a menace Smart was defensively, and has always praised the fans and Stevens.
He's made pretty good money, and if he did well here, he could certainly get a lucrative contract that could not only allow him to get paid handsomely at a decent price, but he could do more ventures by broadcasting, or podcasting especially in a huge Sports town like this.