On the field, any manager who has enjoyed a prolonged period of success such as Sir Alex Ferguson, or Bob Paisley and Brian Clough in the 70s and 80s, accepts that getting to the top is the easy bit, the hard part is to stay there.

BBC: Alan Hansen on Chelsea's problems

Professor Brian Morgan, a member of Hafren Power's regional board, the firm behind the scheme, said Mr Ferguson's comments were "preposterous".

BBC: Wales politics