Dez was possible as veteran guy to take some WR3 snaps and backup the starters. Probably not the best fit here for it and with us, but I think teams not considering him are silly. Former All Pros looking for work don't grow on trees. He's surely not what he was, but he signed for nothing with the Saints, and has a lot of upside over that nothing.
With Lamb here and us likely going 3WR as our base, maybe we need another veteran WR to back up those guys?
Maybe, I don't think Dez is a poor fit for that. Better to get a veteran cap casualty who executes better than Dez but will be happy with a pure backup role. I think Dez views this next year as a "prove it" year, and will want the snaps to do it.