London - Arabstoday
The England international has had concerns over the injury and it seems as though Roberto Mancini has decided to rest the experienced midfielder as a precaution.
With City battling to overcome a 1-0 deficit after the defeat in Portugal, Mancini will hope his players stand up and be counted after this fresh new injury blow.
Barry joins captain Vincent Kompany on the side-lines, alongside defenders Pablo Zabaleta and Joleon Lescott who have both been declared doubtful for the tie.
Mancini will look to pick a strong side from his available squad in order to beat Lisbon and advance to the quarter-finals.
Manchester City squad: Hart, Pantilimon, Richards, Lescott, Savic, K Toure, Clichy, Kolarov, Milner, Pizarro, Johnson, Nasri, Silva, De Jong, Y Toure, Dzeko, Aguero, Balotelli.