I think trading Harvin for Brown in a slight downgrade for you actually, I wouldnt do that. I would take Matthews over JChaz, almost all the time but if you do, that you wouldnt have a RB2. Realistically you CANT do this without picking up a WW RB thats capable of getting you a couple weeks worth of work til Matthews is healthy, because right now Ryan Williams is not the answer.
I drink because of the 1998 NFC championship game.
12 team big $$$ non PPR league - QB RB RB WR WR TE D K
RB: Murray, Matthews, R.Bush, D. Brown
WR: Julio Jones, Colston, VJax, Garcon
TE: Witten, Gresham