Liam Burt and Ben Wylie scored the goals last week but found themselves on the bench for Matchday Three of the competition which is restricted to under 21s plus two overage players for Celtic with no restrictions on the Thistle side.
Leo Hjelde, the teenager Norwegian signed from Rosenborg in the summer, came in to replace Robbie Deas in central defence with Ryan Mullen in goals instead of Liam Hughes.
Kick off has been delayed till 7.15pm.
CELTIC: Mullen; O’Connor, Hjelde, Hendry, Church; Connell, Coffey; Harper, Karamoko, Oko Flex; Afolabi
SUBS: Hughes, Wylie, Paterson, Butt, McGrath, Savoury
Your Partick Thistle line up for the City of Glasgow Cup tie versus Celtic Colts this evening sponsored by Pizza Express: pic.twitter.com/0V5D8yhOIV
— Partick Thistle FC (@PartickThistle) December 17, 2019