Yes; if mancini or any manager came in and decided he was not going to make excuses for poor performance and address the deficiencies in the team , then yes we coulfd have won the carling cup.
If the manager who comes in is going to take issue with players like bendtner,denilson,diably,eboue, etc all on huge salaries for nothing and invest the money in proven or experienced players, then we can win something or be able to beat teams like fulham.
If the manager who comes in decides to take set-pieces seriously so that we can score from corners as well and defend them too -- then yes our squad can win things.
That is the argument GB,LDG,myself and others have been making.
So you see, all those things do not require a sugar-daddy