Chelsea manager Jose Mourinho appeared to have another dig at Arsenal boss Arsene Wenger on Tuesday night.
The Blues drew 0-0 with Dynamo Kiev in their third Champions League match of the season, and in his television interview after the game he described the referee as "weak and naive" for not awarding his side a penalty.
Mourinho felt Cesc Fabregas should have been awarded a spot kick early on in their Group G encounter, but nothing was given as the game finished goalless.
The 52-year-old's comments appear to refer to Wenger's post-match reaction from Arsenal's 2-0 defeat at Chelsea in September, when he described referee Mike Dean as "naive" and "weak" after the game.
Mourinho was recently fined £50,000 and handed a suspended one-match ban by the FA for comments made after his side's defeat to Southampton in September. Mourinho had claimed that "referees are afraid to give decisions for Chelsea".
The Chelsea boss was furious with the fine and described it as a "disgrace", while referring to the lack of punishment for Wenger earlier in the season.
"£50,000 is a disgrace. The possibility of getting a stadium ban is astonishing," he said at the launch of his book earlier in October.
"The word 'afraid' is a punishment, and a hard punishment. But to say the referee was 'weak and naive', referring to one of the top referees, not just in this country, also in Europe, to call him 'weak and naive' we can do."
Chelsea travel to West Ham on Saturday, having returned to winning ways in the Premier League with a 2-0 victory over Aston Villa.