In days of yore when there was no salary cap, no limit to the size of your list and you fielded seniors, reserves and under 19s you simply would not hold onto a player like Newton for more than 3 or 4 years let alone the 6 he's reached at this point in time. But it's 2011 and if he is kept on as a second year rookie the relative cost is minimal. It will be a case of rookie pick 89 or even less if Cam Bruce doesn't come to the party i.e. it's neither here nor there - the 46th player on a list of 46.
The odds are against him and I remain skeptical but historically, there have been cases of players coming out of their shells when given different roles. I'd give him a chance to develop in the new role of back up ruckman cum forward. There are about five weeks during the pre season NAB Cup/NAB Challenge/practice matches when clubs can experiment. He can be tried in that role or he can be given a run in defence. Stranger things have happened.