Sheffield United have been fined £4,000 by the Football Association for failing to control officials in the 1-0 win over Southampton in the League Cup.
Blades first-team coach Chris Morgan was sent to the stands following heated exchanges between the two benches after Marc McNulty scored the winning goal.
Saints boss Ronald Koeman refused to shake hands with Blades counterpart Nigel Clough at the end of the match.
And the Dutchman accused Clough of lacking respect in the aftermath.
Koeman said at the time: "I shake hands with people who have respect for me and have respect for the fourth official.
"The behaviour of Sheffield United's bench, I never saw that [before]."
Clough, whose League One side face Tottenham in the semi-final of the competition next month, had previously downplayed the incident.
"He's entitled to his opinion. I don't think one word should be said on it, we should be talking about how we have just beaten a Premier League side," he said.