Everton skipper Seamus Coleman reportedly clashed with Liverpool manager Jurgen Klopp during Saturday's ill-tempered derby.
Klopp wasn't shy in giving his thoughts on multiple incidents from the touchline, gesticulating and repeatedly making his voice heard in the empty Goodison.
And, according to reports, his remonstrating eventually drew the ire of Toffees skipper Coleman.
The Liverpool Echo reports the pair became embroiled in a "less-than-civil discussion" after Klopp vented his frustration at an incident which took place in the second half.
It's unknown what the pair's disagreement was about, although there were plenty of contentious moments for them to debate.