I know it must be tough thinking you could have had champions league football. But 5th in the Premiership is a good season. Look at Spurs' squad, most people acknowledge it's better than the current Man City squad.
A few good signings in the summer, a half-decent run in the whatever they call the Uefa cup these days, and a push for top 4 next year would be fine. Rome wasn't built in a day - look at Man Utd.