Speculation is mounting that Sir Alex Ferguson (67) is to retire from the world’s most popular football club Manchester United.

The rumour was triggered by comments made by Inter Milan coach Jose Mourinho who implied that, no one could refuse the chance to manage Manchester United.

Interviewed by ESPN Mourinho, who replaced Roberto Mancini at Inter Milan in 2008, has a couple of years left to run on his contract, which provides the possibility of a move in 2011, Mourinho said: "Manchester United belongs to a small group of clubs from around the world where nobody can say no".

In the meantime Sir Alex will be concentrating on making football history by winning a nineteenth premiership victory, a record currently held by Liverpool.

This is not the first time that the former Chelsea and FC Porto boss has been linked to the Red Devils, but Mourinho’s hinting is unlikely to worry Sir Alex who shows little sign of going anywhere soon.  Philip Townsend Director of Communications at Manchester Untited told the Student Guardian, "We don't comment on speculation about the Manager."