By Daniel Chavkin The Nets point guard is hoping Boston fans are looking ahead instead of behind ahead of the series between the two teams. View the original article to see embedded media. Maybe the most interesting matchup in the first round of the NBA Playoffs is the Celtics vs. Nets series, where Kyrie Irving will play his former team. In the past, when Irving has returned to Boston, the fans have given him a rude greeting given the way Irving left the team. Irving left in free agency after two years with the Celtics despite openly saying he wanted to re-sign with the franchise. As a result…