Former Punjab Chief Minister Amarinder Singh Monday said he felt sad about the way Chief Minister Charanjit Singh Channi was being treated by the Congress party. He said despite having ?tremendous potential?, the CM is being made to be subservient to the whims of State Congress chief Navjot Singh Sidhu. ?Channi will eventually end up as a night watchman only,? the former CM said. Reacting to the appointment of Sidhu as the Chairman of the Congress Election Committee for Punjab, Singh said it