AC Milan boss Gennaro Gattuso ushered his row with Tiemoue Bakayoko behind closed doors after being abused by the midfielder amid a sideline bust-up at San Siro.
Bakayoko appeared to swear in Gattuso's direction after raising his coach's ire with the sluggish pace of his preparation to replace the injured Lucas Biglia in the first half of Monday's 2-1 victory over Bologna.
Gattuso eventually decided against introducing the 24-year-old, opting instead for Jose Mauri, and a pointed exchange took place as the game continued in the background.
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The latest indiscretion seems set to be the death knell for Bakayoko's career at the club as a turbulent season-long loan from Premier League side Chelsea comes to a close.