Manchester United boss Sir Alex Ferguson has slammed Manchester City over a poster campaign in the city, claiming they are "arrogant".
It is part of a long-running tactic from City fans to emphasise that they play in Manchester, while United's ground is actually in the borough of Trafford. No one has admitted responsibility for the poster.
The poster has got Sir Alex riled, who feels they have taken it too far. But he was quick to point out that City are only doing it as they feel inferior to the Red Devils.
The huge poster was erected at the bottom of Deansgate, which just so happens to be one of Manchester's busiest shopping areas. The poster reads: "Carlos Tevez, welcome to Manchester."
It is clearly meant to cause a reaction from United fans, who were desperate for Tevez to remain at Old Trafford after spending two years on loan at the Premier League champions.
There is also a spoof email which shows Michael Owen on crutches with the slogan "Welcome to Stretford".
''It is like one of those war adverts - Your Country Needs You,'' said Sir Alex. ''Arrogance comes in lots of different ways. I think it is daft.''
City have expressed similar sentiments on official merchandise in the past. 'This is our City', 'Greater Manchester' and 'Pure Manchester' were all the brainchild of advertising agency Grey London and depict City's pride in their roots.
''They were having a go at Manchester United,'' he said. ''They have had a problem ever since I came down here - Manchester United.
''You have to understand, when they get their moment to grasp for and to seize for, they are going to take it.''