I would be all for bringing Sheed back if I though he was even in as good shape now as he was last year. We would never have gone as far as we did in the playoffs without him...I thought he was terrific! However, he was never able to play himself into shape last year and he had full access to the Celtics facilities. This year, without the ready access and the example of teammates (Ray, KG and Perk specifically) I doubt that he is even in marginal shape. I do not believe he can get into shape in a couple months. That is my reason for not wanting to give any young talent for Sheed. (And for all the people here who say they want Wallace back, I seem to remember most people giving up completely on the Celtics, being unbelieving every step of the way last year, and bashing and blaming Wallace for his attitude and work ethic.)
I think Erden and Luke show promise, if not to start, then to be viable bench additions or trade chips in the future and at a good price. Perk will be back (hopefully ready to play at a high level) and Shaq at this stage of his career is a better back up than starter. JO (or Glen Davis) can back up KG. Delonte and Marquis can back up PP and the guard positions. I don't see the need for 'Sheed at this time, unless JO is unable to go, and even then I am skeptical.
For very brief minutes, Wafer and Luke won't hurt you too much. I like the team as it stands and think they just have to find their passion and UBUNTU again.