a year old bird? no actual experience, but my guess is that it may be ok. by that, i mean there's little chance of it being actually bad for you to eat it, but that the texture of the meat may be affected. smaller cuts of meat that have been poorly wrapped will have a pretty grainy texture and will be drier. but a turkey is a pretty large hunk of meat and they're either vacuum or shrunk wrapped in fairly thick plastic, so my opinion would be to go for it. however, someone who has actually roasted up a year old turkey before may have a different opinion. however, if it's been defrosted last year and then refrozen, you may want to go with a fresh bird for the holidays and use that one for stew or soup meat.