Cleveland Cavaliers rookie guard Kyrie Irving is expected to need three months to completely recover from a toe injury, meaning he could be on the sidelines if the NBA season starts on time.Irving, the top pick in the 2011 draft, says the toe feels fine but is dealing with ligament damage that could become an issue if not permitted to heal.Under the current timetable, Irving likely won’t be completely healthy until mid-December.The 19-year-old may not have to worry about missing any time, with the owners and players’ union still far apart in negotiations for a new collective bargaining agreement.