Is anyone concerned by the fact that the Cavs/Suns were noticeably worse on the floor when Shaq was playing? and by the fact that he's burned bridges with almost every team that he's played with? That he has a history of sulking when things aren't going his way? That he has no lift/athleticism/can't hit free throws? Yes, he can still rebound and occasionally score in the low post. He'd be a great big man to have for 15-20 minutes a game. But would he be happy with only playing that?
Cavs weren't worse (in my opinion)
Suns were (but that's because they play the complete opposite style).
I don't think he's burned bridges with his last 2 teams (Cavs and Suns) unless I'm missing/forgetting something. To me, this helps maybe show that he is more accepting of the fact he's not the man anymore = less of a primadona now.
What backup Center has the combination of lift/athleticism/can hit free throws/score and rebound that you're looking for?
Phoenix purposely played him like every other game his first season there, and he was ok with that (or just sat him the 2nd night of back-to-backs, something like that). And he played only 23 minutes a game for Cleveland. I think he knows he's not superman anymore and is on his way down.
If I were Danny, I would call the Big 3 and Doc, ask their opinions, if they want him, I'd get him. If not, end of story. (Not that I let a players/coaches dictate moves, but I would always confer with them especially on bigger moves/personalities/question marks). Just remember we're talking about a backup center who we'll probably get less than 1000 minutes from. Expectations shouldn't be too high.