I don't think that any accurate predictions for Sidibe can be made upon last year's performance.
He spent last offseason through september in a leg immobilizer, and didn't get to work on his game at all. And that was after barely playing as a freshman.
When last October rolled around, he was at about 75%. That put him behind the 8-ball, and he never caught up. Once he got off to a slow start, Boeheim lost confidence in him, he lost confidence in himself, and the season was lost.
Now, one of two conditions is true moving forward. Either the tendinitis issue is chronic, he's lost a bit of athleticism, and he'll never regain it -- in which case, he doesn't have much upside beyond being a reserve.
Or the timing of when he got out of his immobilizer sucked, he can regain his athleticism, and next year can be different now that he's more experienced and can spend an offseason working on his game instead of just trying to get back to square one physically.
Will be interesting to see which scenario plays out for Sidibe -- but I don't think that last year's performance is necessarily a predictor, because the timing of his "recovery" couldn't have been worse. Now, he could still be impaired long term, a la Dejuan Coleman. We should know early next season which outcome is more likely.
I agree with this but think the only thing I'd add is that even late in the season when, we'd hope at least that he was healthier, he still looked very slow and awkward getting up off the floor and still didn't seem to have any spring or quickness.
I'm rooting for the kid b/c I was very excited by his potential to be a Baye Keita w/offense type of player. I also think there's a chance he gets healthy and is a big contributor. But I'm not particularly optimistic.