Don't mean to sound all pessimistic, and I'm not really trying to spark a debate, but I can't imagine it ever happening in my lifetime. I've never seen it happen.
No-one could envisage us challenging in 2013-2014 season. Yes we had a genius of a player upfront then(fights back the tears), but football is ever changing, and gone are the days of United winning the thing every fucking year...well almost. It's more open now, and no team is invincible.
I think we'll challenge again.