It does seem unlikely that he can turn into an elite route runner at his age. But, don't you think his experience at QB (along with the time he has spent running routes in past years) will give him a leg up on most 30+ guys learning to be better route runners? It just seems to me that as a former QB, he already knows the route trees, knows how defenses will react to different formations, knows what a TE should do on an option route based on the look, and has to have some idea what makes a bad route vs. a good route. It seems it will be more about him putting what he knows into practice and making it routine and repeatable. Which is no doubt difficult, but he isn't starting from scratch.