City are on the brink of lifting their first trophy since 1976 after beating United in Saturday's semi-final at Wembley to set up a May 14 showdown with Stoke.
Supporters at Old Trafford never tire of reminding their city rivals of the length of their silverware drought, annually updating a banner that hangs at the Stretford End.
It recently ticked around to 35 years and City boss Mancini said: "They can take off this banner. We hope we can take it off this year."
City cleared a huge psychological hurdle on Saturday by reaching their first cup final since 1981 and doing so with a victory over their fiercest rivals.
Mancini said: "Our mentality will be more strong because we beat United."
Source: PA
Source: PA