Gray is small in stature where as Fernandez is 6-3 244.
I think Fernandez is going to go down as the pitcher of this generation.
Im not usually a "sell the farm for an arm" guy due to the natural volatility of the position as a whole, but Fernandez is IMO the most valuable pitcher in the league ainec. His mechanics don't bother me as much as a guy like Sale's, he owns the mound when he is out there, his stuff is as good as anyone's, he's under control, he's only 23 and an established ace...yeah my offer would be Kopech/Moncada/Travis/high upside low minors guy like Cedrola. Probably wouldn't get him either (unless they are incredibly high on Kopech)