Manchester City boss Manuel Pellegrini was relieved to be still in the FA Cup after their come-from-behind win over Sheffield Wednesday.
James Milner struck twice, including a stoppage-time winner, as the Barclays Premier League champions came from behind to beat their battling Sky Bet Championship opponents 2-1 at the Etihad Stadium.
City toiled after falling behind to an Atdhe Nuhiu strike in the 14th minute and only roused themselves in the latter stages with Milner switching to a forward role and equalising after 65 minutes.
Pellegrini said: "Yes I am relieved because we didn't play well.
"We play very badly except the last 20 minutes, when we hit another gear to try to create the space against a team that defended very well.
"When you play against this kind of team it is difficult when you are 1-0 down."