If the Celtics and Rondo are to get an extension done, they have an extra couple of days to do so: (http://sports.espn.go.com/nba/news/story?id=4606873)The league has pushed the deadline for contract extensions for all players from the 2006 draft class from Saturday to Monday, league spokesman Tim Frank confirmed Thursday night.NBA front-office sources told ESPN.com that all 30 teams were notified via league memorandum earlier this week that the league's annual Oct. 31 deadline for players in the fourth year of their rookie-scale contracts, according to the collective-bargaining agreement, is moved to the next available business day if the deadline falls on a Saturday, Sunday or federal holiday.