I don't see it. It would probably take a Heisman type year to motivate Taysom to leave early. If he was selected in the 3rd round as a JR he'll probably be selected in a similar spot if not better as a SR. I think just that first round is that sensitive to SR. drop off performances (see KVN but it looks like all will be fine for him just the same...)That schedule is a reason to stay.
The next two years should be showcase years for Taysom. Then Trent or hopefully Tanner will taker over for a few more.... I like our future QB scenario.