City almost never have looked impressive this whole season. They didn't deserve either win against Bayern or Roma.
Hart, Kompany, Mangala, Demicheles, Clichy, and Zabaleta are all very error-prone at the back. Toure is at his lowest point of his career. Fernando and Fernandinho are doing okay. Navas can't shoot and probably won't play anyways. Milner is doing fine but nothing special. Aguero's goal contribution ratio is much more of a credit to his selfishness than him being any sort of magical player this year, he'll probably be injured and if not, he'll be as absent as he was last year. Dzeko has been bad, he tries to play as some sort of deep secondary striker/playmaker but has no skills to do so. Jovetic is a joke. Lampard is probably back in the MLS by then. Leaving Nasri and Silva as their only hope, but both have been injured most of the year and probably will be for this game.
I don't see what there is to fear in this team. They're lucky to be 3 points behind an overrated Chelsea in an overrated league.
Best of all Pellegrini won't park the bus against us.
I expect a comfortable 5-1 aggregate.
All our possible opponents were easy. This isn't ideal, but we're not getting knocked out in the Ro16