Good grief some of you guys.
You trade Pettersson if you think hes not a "good player" or more precisely if you think you can get something more valuable to your organisation back.
You dont trade him because your feelings got hurt.
I think a lot of people got their feelings hurt about Petey's statement of wanting to be in a "winning team" whilst holding out on his contract. The Sedins never did this class act, and they only started earning the big bucks during their prime and late 20's. He doesn't get much slack anymore since he signed that 7+ million bridge deal. Kid has to perform.