I know Stafford is older, and gets dinged like every othe QB, but I don't think he was THAT hurt last year, - I believe McVay took a look at the Oline, and just shut him down.
As has been said multiple times, fix the Oline and/or suffer less injuries, and Staff's good for at least another 3 years.
Which is by way of saying I am not interested at all in Mayfield - think he's a good guy, and a bit of a lightning rod for the press (sometimes deserved). but he showed the same inconsistencies he's always shown, and he ain't backing up for less tha $8-10M imo, which can be better spent elsewhere.