http://espn.go.com/blog/boston/celtics/post/_/id/4705003/ainge-optimistic-rivers-kg-will-return#more
Lots of optimism. 
Pressed further on what he believes Rivers will do next season, Ainge added, "I think Doc will be coaching the Boston Celtics."
"I do the same thing as I do with Doc: I give him some time away and I’ll touch base with KG probably sometime next week," said Ainge. "He’s put so much into the game, he invests as much as any player I’ve ever seen. And he just needs time to chill and contemplate his life and then we’ll talk at some future time. But I do anticipate that KG will play. Just like I did last year, I feel the same this year. I don’t know for sure, but we’ll know more in the next couple weeks."
"So far he looks good; him and [Leandro] Barbosa [whom the Celtics also lost to an ACL tear in February] have both been rehabbing and both have looked good from their ACL [surgeries]," said Ainge, who later added, "From everything our medical staff has told us, Rondo is doing great and he should be ready by training camp."
hope DA finds a way to get Barbosa back......the lakers may be after him
He will bring him back. He said it before and bringing it up again now, definitely shows he is committed to bring him back. And with a chance what he showed he can do, he will be signed for alot more than bare min. Maybe 2 years at 2.5 each year. And i see Barbosa coming back here first than going anywhere else, like the hated lakers team.
Danny from what it looks like, wants to go for another run. Pierce will be brought back, overpaid but he will fill in seats, especially if the org can go on a deep run into the playoffs.
The way i see things transpiring will be Danny calling Kg, Kg asking if PP is coming back and how else will Danny ammo the team to prepare for 2014 championship run. Then unless KG is the first one to say he is done, Pierce will gladly comeback (at 15 mil, who wouldn't) , Rondo, Sully hopefully healthy and one more attempt at a title run with everyone on board. Even without KG/PP, in general i think the celtics could make 7th or 8th place. Adding these two vets is like adding ammo for the playoffs.
Lineup i envision for 2013-2014 team
Starting lineup - C:Kg PF:Green SF:Pierce SG:AB PG:Rondo
Bench - C: Sully PF: Bass SF: FA signing SG: Terry PG: Barbosa
Extra - T Will, Crawford, Melo, Draft pick
Especially obtaining a key SF that can score points/defend will be key for the team. Someone like Pietrus can be prob brought back cheap