The 24-year-old joins a Hawks side currently sitting two places and one point better off than the Reds in the National League South play-off places.
Born in Australia, Kealy was with Brighton & Hove Albion as a youngster but first joined the Rebels in July 2018 after spells with Met Police and Lewes before eventually departing for Sutton in 2020. He re-joined the Reds in December 2021, initially on loan from Dorking Wanderers before making the move permanent last summer.
The front man hit a fine run of form earlier this season when he scored six goals in four games between November and December and is the club’s current top scorer in the league this season with 12 goals.
He leaves the club having played over 130 times for the Rebels in all competitions, scoring 44 goals, including a hat-trick against his new club at The Draper Tools Community Stadium earlier this season in a memorable 5-1 victory.
Everyone at the Club would like to thank Callum for his efforts throughout his time at the club.