I hate to sound negative, but he has no chance of kicking even 50 goals THIS year. Two reasons, firstly we are still going to be a bottom three side. So the ball inside 50 wont be either there enough or delivered with quality. And secondly, there are only one or two small forwards in the game capable of kicking 50 goals, let alone 75!
Think of the best small forwards in the game: Milne, Chapman, Rioli, Le Cras. None of them could kick 75 even in a great side, let alone a bottom side.
When we get better, he is certainly capable of kicking 50. But by this stage our attack will be focused on Watts at full forward and having cream midfielders kicking goals (like Murphy, Judd, Gibbs we will have Scully, Trengove etc). So even at this stage he will not be able to kick 75. But I'd be rapt with a 50 goal season!