Week #4 LB?

Who would you start this week and who should put up more tackles and possibly a sack?

!.  Donald Butler at KC

or

2.  David Harris vs SanFran

Thanks

Not a big fan of Harris but I think this week could be one of his best weeks. Both players are essentially at the same level this week. Harris is a bit riskier but has a tend bit more upside this week.