Heading into this year's NBA offseason and free agency later in July , the Utah Jazz could have just enough cap space to pursue one or two worthwhile roster upgrades who can navigate into a rotational role next season. The Jazz's biggest priority in free agency will be to re-sign their defensive anchor and restricted free agent, Walker Kessler . However, they'll also have over $20 million in projected space and Bird Rights to utilize on their big man for additional cap flexibility. That means if the Jazz were able to sign a free agent on the market, then use Kessler's Bird Rights to sign him afterwards, it could get this roster a talented free agent, and exceed the league cap without being even close to reaching the dreaded first apron. If that were an outcome in play to add an impact player via free agency, there might be no better fit to pursue than Los Angeles Lakers forward Rui Hachimura, who's one of the few names hitting the market that the Jazz should investigate as a priority target.…