Jose Mourinho has had what could be seen as another pop at Chelsea and boss Antonio Conte's tactics.
The Manchester United manager appears keen to take any romanticism out of how the Blues won the title last year.
Mourinho's already claimed the Blues won the Premier League last season with defensive football, and now he's criticised Chelsea - and their London rivals Arsenal - over their use of a 3-4-3 formations.
Football.London reports that Mourinho tagged the Blues' tactics as "trendy", before stating that the formation is more of a back five - rather than just three centre-backs.
With Basel playing with a back five against the Red Devils in the Champions League last night, Mourinho took another little dig at Antonio Conte and the Blues over their formation.
“I think they follow the trendy tactic of five in the back that some of your colleagues like to call three but they are totally wrong, it is five,” said Mourinho after his side’s 3-0 win.
“They were very well organised, they tried to close every space and then after the 2-0, the coach changed to four in the back and gave more freedom to [Michael] Lang, but more players in attacking areas.
“They understood they changed their mentality and approach and then they showed their qualities they also have. I think the 3-0 is a little bit against the grain of the game in this period.
“But as I was saying before in the group phase any team can take points from the other team.”