First off, you can do whatever you want in the end, but.......
NO!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
I can assure you it's not a healthy practice in dynasty to trade away young talent like Funchess, especially when that talent is responding to the coaching and dedication they are putting into the game. This is what is happening with Funchess.
What you really want to be doing is setting yourself up to be the guy or girl that builds up IDP talent so you can flip it for guys like this, not the other way around.
As for Funchess, he might be your WR6, but his stock is going to rise, it's just a matter of opportunity, and then at some point if you move him, see if maybe he alone or paired with another player can land you a dominant RB, TE or even receiver.
Tackle heavy names to keep an eye on if they are around
Nate Irving - Colts
Zach Orr - Baltimore
Jonathan Casillas - Giants
DeVondre Campbell - Falcons
Todd Davis - Broncos
those are some, of course I'm not sure who you might be able to land, but if worse comes to worse find some of these names on other teams rosters and make a cheaper move to keep a very valuable asset like Funchess.