Butler is expected to be sidelined for an unknown period due to a sprained ankle/Achilles injury, Darren Urban of the Cardinals' official site reports.
Butler has been tending to an ankle sprain since Week 1, which dampened his effectiveness Sunday in Buffalo to the tune of an averaged of 36.5 yards on his four punts. The possibility exists for Butler to dress on game days, but only to hold for Chandler Catanzaro, so the Cardinals are seemingly in the market fora punter at the moment.