Remember when the Boston Celtics made a serious push for Kevin Durant during the 2016 offseason? Apparently he wasn’t the only player who would have come to Boston in that scenario. Retired NBA guard Ray Allen, who spent five seasons in Boston from 2007 to 2012, admitted Thursday he spoke with Danny Ainge in 2016 and told the Celtics president of basketball operations he was open to re-joining the C’s if they landed Durant in free agency.