Detroit is all Bertuzzi had known in his NHL career up until coming to Boston. Now that he has been in the playoffs and lived for a short time in a different city, perhaps he has broadened his horizons and won't be so attached to Detroit. Might want to spend his prime years with a more competitive team than Detroit. Would be awesome if he chose to play in Boston for those years.
However, common sense still tells me he will go back to Detroit since he has professed his love for living there, his bestie plays there, and Det has now seen what Bert can do with more elite players and in a playoff environment. Have to think Yzerman will try to work something out with Bert. Also have to wonder if that was the plan all along, regardless of how Bert did in Boston, just so Detroit could get that 1st round pick.