I can only assume that either GWS or GC would meet with Viney before that made a nomination that could commit them to taking him with pick 1 or 2. Surely all that needs to happen then is that young Jack tells them he is keen to stay in Victoria and if they draft him he would seek a trade back to Vic and the end of the standard 2 year deal.
There is no way either club would risk that happening, Jack can slip to us in the second round and the AFL has no grounds (or proof at least) to accuse us of draft tampering, a quiet word from Todd to Jack at the dinner table would be hard for even the world police at the AFL to investigate.