London: Manchester United manager Alex Ferguson has admitted for the first time that "noisy neighbours" Manchester City can no longer be ignored at Old Trafford.
"There was a period not so long ago when they were actually in the second division. They were never a thorn in our flesh," said Ferguson.
"Every year, we have had to contend with Arsenal, Chelsea or Liverpool. Nothing changes, one of them will always be a thorn in our flesh because you cannot change history.