Lobo has had two stints at ATK including a loan spell in 2014 wherein he won the ISL title. He spent a season with Kerala Blasters in 2015 before joining ATK on a permanent deal from East Bengal.
"He (Lobo) will be available for our next game," Churchill Brothers team manager, Denzil Ferrao, confirmed to Goal.
"I haven't been getting enough time (at ATK) so I think this is a good opportunity for me. Churchill Brothers are in the title race also," Lobo commented on his move.
The Red Machines are currently second in the I-League standings with 25 points from 13 games, five points behind league leaders Chennai City FC.
Cavin Lobo is set to complete his registration on Friday ahead of Churchill Brothers' clash against Indian Arrows at the Tilak Maidan stadium in Vasco, Goa, on Saturday.