The Premier League led the way in the UEFA Champions League this week as all four teams came through tough tests to reach the quarter-finals for the second successive season.
With the champions of Spain and Italy, Real Madrid and Inter Milan, seen off by Liverpool and United respectively, Chelsea and Arsenal ended Italian interest in the competition by knocking out Juventus and Roma.
Only Barcelona and Bayern Munich offer a genuine threat to stopping one of the Premier League quartet from lifting Europe's top honour.
And with the possibility of an English team making the final for the fifth successive season very much on the cards, Ferguson has heralded the Premier League as the best in the business.
Quality"The quality, intensity and speed of the game in England is far beyond other countries," said Ferguson.
"It has been building up for quite a few years now.
"The Premier League product is an attraction for anybody coming here.
"Chelsea proved that with some of the players they brought here. We've got an Argentinian and Brazilians playing for us now and people are viewing it as the toughest league in the world."