Steve smith for Matt Forte?

A guy in my FF league needs a running back, and wants to trade me Steve Smith for Matt Forte. I already have Frank Gore, Marshawn Lynch, Steve Slaton, Ronnie Brown, and Darren Sproles for RBs outside of Forte. He has been a great Flex position RB for me, but now i have Ronnie Brown coming alive for that spot (that's why i drafted Brown).