Steve Pagliuca, a minority owner of the Boston Celtics, has led a group in securing a landmark $325 million deal to buy the WNBA’s Connecticut Sun. The transaction, which sets a new record for an NBA team acquisition, includes the team’s relocation to Boston, marking a significant shift in the league’s geography. The move is expected to boost the Sun’s profile and expand the WNBA’s presence in the historic sports market of Boston.