Boston Celtics Celtics ‘expressed interest’ in LeBron James in free agency before he joined 76ers "The Boston Celtics, James' consistent nemesis through the years, expressed interest, sources told ESPN." LeBron James will have plenty more battles with the Celtics during the 2026-27 season. AP Photo/Katie ChinThe Celtics will have their hands full this season trying to slow down LeBron James and a stacked Philadelphia 76ers team that also acquired Jaylen Brown from Boston earlier this month. The Boston Celtics, James’ consistent nemesis through the years, expressed interest, sources told ESPN. James ultimately decided to sign a two-year deal with a player’s option with the Sixers for the veteran’s minimum.