Zero. More likely, Walt goes on the offensive against Gustavo.
I really like how well they have fleshed out Gus's character this season. It was hard to tell how much coldness he had in him prior to this year (except apparently being ok with eliminating a little kid). Added points where we see him commit murder with a box cutter, killing the entire drug cartel leadership, constant tormenting of a helpless old cripple, threating infants, etc., he is really turning into someone you can really root against...