To be honest, as much as it pains me to say so, I think Merson is correct in this case.
With us, it had been building and even though we did incredibly well in our first year in the premier League, apart from the fact that it had been hinted at how good we could be by storming the Championship, we didn't win the League. That's a whole different ball game.
For Leicester to go from near relegation certainties, to champions, within 1 season, I would say, will never happen again.
What has also worked for them is that every other team who you'd expect to challenge has under performed quite drastically. I can't see that happening again either.
This is a complete one off.