Mattison Trade Value?

I have Mattison in my league and the Dalvin Cook owner has been after him all season. I’ve been holding onto him obviously in case something were to happen to Cook, but now I’m giving serious thought to trading him away. Would Golden Tate be good value in a trade? I’m trying to figure out what the best value I could get for him might be.

The Cook owner currently has:

RB
Cook
Jacobs
Thompson
Anderson
Bernard

WR
Adams
Woods
M. Williams
Hardman
M. Jones Jr
Golden Tate