The 18-year-old striker missed the whole of last season through injury and is looking for the Lowland League side to give him the game time to get his career back on track.
McGrath came on as a substitute in Celtic’s Glasgow Cup defeat from Clyde and will continue to train with the hoops on a daily basis while joining EK for evening training sessions.
East Kilbride lost out to Cove Rangers in the Play Off last season and are expected to go head-to-head with Kelty Hearts for the Lowland League title and the chance to enter the SPFL through the play-off system.
Speaking to the Daily Record after making a 10 minute appearance as a substitute against Edinburgh University he said:
I know I’m only 18, but I’ve been about the reserve team at Celtic before my injury, so I know what it takes and I get what needs to be done. I hadn’t trained with the boys or met them before Saturday, but they all made me feel really welcome. To come on and be involved in the last goal was great. To get playing again and feel confident, that’s all I want.
Josh Kerr and Keiran Campbell have previously went on loan to East Kilbride, the K-Park outfit are currently seven points behind leaders Bonyrigg Rose after six matches but have played a game fewer.