2. Edwin van der Saar - Fulham and Manchester United
Not many players can move to Manchester United at the age of 34 and then go on to become one of the club's greatest ever goalkeepers. Van der Saar had already become a household name at Ajax and Juventus, before he introduced himself to the Premier League with Fulham. United and Ferguson had struggled to settle on one goalkeeper ever since Peter Schmeichel had left, and van der Saar proved to be the solution.
The Dutchman was pretty much the first choice until David De Gea arrived in 2011. He spent 6 seasons at Old Trafford, and won 4 Premier League titles as United reasserted their dominance over Jose Mourinho's Chelsea.
During the 2008/09 season, van der Saar set a league record by not conceding a goal for 1311 minutes. He also helped win the 2008 Champions League by saving Nicolas Anelka's penalty in Moscow.
He eventually retired in 2011, with his final game being the UCL final defeat to Barcelona.