Entwistle was waived by the Panthers on Tuesday, according to Elliotte Friedman of Sportsnet.
Entwistle will report to AHL Charlotte if he clears waivers. The right-shot forward signed a one-year, two-way contract with Florida in July after spending the first four seasons of his NHL tenure with the Blackhawks. Entwistle has collected 35 points in 193 career regular-season games.