Man Utd have battled against odds to take title to final day - Sir Alex
He said: "I think it's amazing. When Ferdinand and Vidic are playing every week you see the stability, authority and experience that gives you.
"It's not been the case this season. Rio's only had 11 games.
"But we've made a fist of it, we've taken it to the last game of the season. We can't ask for more."