City are only permitted 21 names in the A squad rather than the usual 25 as a sanction for breaching UEFA's financial fair play regulations.
The restrictions also limited City to 16 non-homegrown players, but the departure of Alvaro Negredo to Valencia on Monday spared Manuel Pellegrini a difficult decision
Serbian defender Matija Nastasic, strongly linked with a move away prior to Monday's transfer deadline, is not included in the A squad but will still be able to play matches as he was under 21 at the turn of the year and can be part of the B squad.
City's A squad for the Champions League: Hart, Caballero, Sagna, Kompany, Zabaleta, Kolarov, Mangala, Clichy, Demichelis, Boyata, Fernando, Milner, Nasri, Navas, Lampard, Silva, Fernandinho, Toure, Dzeko, Aguero, Jovetic.
Source : PA