Man city’s Joe Hart.

Manchester United manager, Alex Ferguson regrets not having bought Joe Hart earlier in his career. The England number one goalkeeper was available to Ferguson for only £100,000. Manchester City eventually snapped him from Shrewsbury and he has since become one of Premier League’s most feared keepers.
  “I could have bought Joe Hart for £100,000 so we all make mistakes.” Ferguson is quoted to have said on BBC Radio 5.

Ferguson also believes that Hart will be England’s keeper for the next 10 years.