bledsoe for matthews is a risky trade but since you have either gannon or bledsoe as your primary QB you can take a chance. I'd trade for matthews right now cuz if the other owner has luck with matthews he wont trade him for bledsoe no gannon straight up.
if i were you i'd trade gannon instead of bledsoe. gannon is an old arm and the raiders vowed to go at the running game more often this year so gannon is inline for a decline. try to package gannon and one of your running backs for an upgrade at RB cuz you gonna need it. if anybody wants william green, send him. he's already hurting and he wont be able to do much this year. if you're stuck with green you might wanna use dillon as a trade bait, try to package gannon and dillon for someone like shaun alexander or ahman green.