Well, you can't. But as I said up top, if he balls out the next two games against elite teams on the biggest of stages, there will be more than one NFL team interested. Big IF there of course. But his arm strength cannot be questioned, which is all Kiper really mentioned. There is enough physical size and raw talent there that I could see a team taking a flyer on him in the 3rd-5th rounds based on hopefully 3 games of data.
None of this is about whether anybody thinks Cardale is "ready" for the NFL or would have any chance of a long career. To me it is more about his best chance to get paid while he has maybe his only opportunity to be in the spotlight at OSU. Realistically, injuries are probably his only path back to the starting job or meaningful minutes in his last two years.