He was mediocre as a passing QB: 3200 (25th), 15 (tied 21) 6.8 YPA (tied 23). He's in the range of Jimmy G, Mariota and Tannehill----and this is his best season since rookie.
How much will a team pay for that? If the Giants don't sing him, that brings his value down, I think. He is most valuable to them in that system. But if Barkley goes, they are sunk with Jones at QB.