Need Your Opinion

[Roy Dixon]

Im in a 10 team Yahoo league (non PPR)

My buddy has Cam, but never starts him. He knows his value but he also owns Vick and starts him instead. I'm trying to get Cam from him. I offered him Witten which gives him +23 projected points for the rest of the season, but he wants one of my RBs also. I own Foster, Gore, Greene and McGahee so my RB core is pretty decent. He asked for Gore, but I think that is asking way too much.I already have Fitz ... should I offer him McGahee or Greene along with Witten? or stick with what I have?