Devon Witherspoon's trade value is worth exploring

The Seahawks won't trade Witherspoon but his value is a negotiation point for both sides

I’ve been writing about the Seahawks long enough to know that fans don’t want to talk about trading away popular players. Sometimes it’s hard enough to broach the subject of trading un-popular Seahawks players (or at least overrated ones). But sometimes popular Seahawks players do get traded and it’s usually when they are asking for a raise:

—Frank Clark…