Brad Stevens said Thursday evening that the Celtics would fill one of their two open roster spots “relatively soon.” He wasn’t kidding. Two hours later, during the second quarter of Boston’s matchup with the Dallas Mavericks at TD Garden,

P.J. Tucker has become a buyout candidate for the Jazz. He had fallen out of the rotation with the Clippers and still wants to play for a contender. The Celtics could go after him in the buyout market if he is bought out. Tucker would be a veteran presence who can play some good defense.