Do you think that Rogers will play as a SF or a PF in New Jersey...? He can play either one, really, and I don't think he will start over Martin or Jefferson. Personally I think he should play as Jefferson's backup at SF.
He will play a bit of both positions, but i think mostly SF... as theres already Aaron Williams backing up the PF position, and IMO Rogers plays more like a SF than a PF since he has limited post skills and he plays more comfortably away from the basket. I expect him to get around 25-30 min a game, and the addition of rogers provides NJ an outside threat which they lacked and depth to their bench.