The Swiss international can see just one trophy lifting the London club out of the doldrums and making up for the lost time of the past six years.
"You expect better for Arsenal, of course," he told Sky Sports News.
"But I think that when this long run ends it will just go crazy and we'll win everything that is there because this club's got so much potential.
"It's not only the players but all the club is something very special. When you play for Arsenal you feel very privileged.
"It's true that it's been six years but I'm just waiting for the moment. I wanted to win something so bad to say to those people 'sshh, that's it, it's finished with and we've won something'.
"Unfortunately I can't say that now because it's not the case, but it's not even to say that people are wrong, it's for us to show that we are good enough because we know in ourselves that we are good enough."