The arguments for ZW leaving are:
1. 1st round pick projection--possible now and guaranteed if he fulfills #2 or #3.
2. Wins a playoff game
3. Wins the Heisman
I think all of these are a longshot at this stage and really think ZW will look at the schedule next year and want to be the QB who finally beats Utah. The rest of the schedule is solid, but I wouldn't be surprised to see him circle Utah and make that his reason for returning. Unfinished business. That and he'd pretty well lock up a first round pick after his Senior year.