The 33-year-old Ivory Coast midfielder has yet to feature for City in a Premier League squad after the first three matches under new manager Pep Guardiola.
Toure was squeezed out by UEFA rules on the minimum number of locally trained players in European squads
Although teams can name up to 25 players, eight of those must be homegrown and City's lack of numbers in this area following Joe Hart's loan move to Torino meant they could include only 21 - with Toure the odd man out
City qualified for the group stages after coming through a play-off tie against Steaua Bucharest, where Toure played in the 1-0 second leg win at the Etihad Stadium
The English side, who reached the semi-finals last season, were drawn in Group C along with Guardiola's former club Barcelona, German side Borussia Monchengladbach and Scottish champions Celtic, where Toure's brother Kolo now plays after leaving Liverpool
:: Manchester City Champions League squad for 2016/2017 group stages:
Claudio Bravo, Willy Caballero; Bacary Sagna, Vincent Kompany, Pablo Zabaleta, Aleksandar Kolarov, Gael Clichy, John Stones, Nicolas Otamendi; Fernando, Raheem Sterling, Ilkay Gundogan, Jesus Navas, Kevin De Bruyne, Fabian Delph, Leroy Sane, David Silva, Fernandinho; Nolito, Sergio Aguero, Kelechi Iheanacho
Source : PA
Source: PA