Hardman played physically and did his best during his limited stretch with the team. Most likely he will get a season in the AHL next year, so if the team manages to find a team that liked what they saw and is willing to overpay then sure let him go.
Kurashev had flashes of great play this past season. However, he was someone that was either on the top line or on the fourth line. Kurashev probably was not the most consistent forward this team had, and if they can find a more consistent guy with more experience then sure trade him.
Entwistle played in his first five NHL games this past season dishing out ten hits along the way and scoring his first NHL goal. He is someone I do not think the team would trade, but he also is expendable just based on how many other players this team has that can fit that role (Hardman ext).