City conceded two goals in the FA Cup replay win over Leicester City last night, after having conceded three at home to Wolves on Saturday and two in the first clash with Leicester.
“It is always difficult in the FA Cup,” Mancini told ESPN.
“Leicester played very well in the first 20 minutes but after we played better and scored the three goals.
“But again in the last 15 minutes, like against Wolves, we thought that it was finished and we conceded another one.”
He added on his defence: “We must improve. We have conceded a lot of goals in the last three games, so we must be sure to work hard.”
