 Complete the following phrase:  During his tenure, Ferguson was credited with the distinction of making some of the most shrewd purchases in the clubs history, including the signings of Peter Schmeichel and Eric Cantona, each for less than 1.5 million. With these signings, combined with the clubs many experienced players, Ferguson brought the league title back to Old Trafford for the first time in 26 years. In the following decade, he won the Premier League title another six times, including a hat-trick of titles from 1999 to 2001, a feat that no other manager has yet achieved with the same club. In 1999, he also led the club to an unprecedented Treble of Premier League, 