It was a season like few in NBA history, one in which giants crumbled. While the Los Angeles Lakers evaporated in the West, the Boston Celtics were miserable in the East.

Neither team, so often masters of pro basketball, made the playoffs. And both enter the offseason with major needs.

Celtics boss Danny Ainge addressed the challenges he and his superiors face moving into an offseason that will focus on rebuilding.

"We're hopeful," Ainge told the Boston Herald. "I have some ideas and some plans that I'd like to do, but there's just no guarantee that we can do it. We need to find good trading partners. We always are trying to make fireworks. Every summer we try to do something that's unique and special, and we will definitely try this summer.

"I don't know anything about what we can do. I'm hopeful. I'll work my tail off to duplicate what we've done in the past, but there are no guarantees."

Wednesday's 118-102 home loss to the Washington Wizards left the Celtics 25-57 for the season, a record two games worse than the Lakers' franchise-worst finish.

Two key questions: Will the Celtics be able to keep Rajon Rondo happy, and what's the future hold for coach Brad Stevens after one year on the job?

Ainge knows this was a transition season for Stevens, fresh from college success at Butler.

"He's a sponge, and he's very intelligent with a great work ethic, and I couldn't be happier," Ainge said.

"I have no worries about Brad. Brad is maybe the only thing in this whole organization I'm not concerned about."

Rondo can become a free agent in 2015, the Herald noted. Ainge pegged hopes of keeping the franchise's best player on improving the roster.

He predicted Rondo "will have the best year of his career next year. I think he's sort of in a phase of his life where he's matured. He's just smarter. I think he'll be really healthy and fresher with a summer of strength."

Young players' development and personnel moves will fill Ainge's summer. As president of operations, Ainge will look to fill needs as the team moves away from the Paul Pierce-Kevin Garnett era. Among the priorities, according to the Boston Globe: Adding size up front to supplement young center Vitor Faverani.

Ainge said he doesn't expect to see many "difference makers" available in free agency.