Collingwood coach Mick Malthouse and St Kilda forward Stephen Milne have both been fined by the AFL for their part in a verbal clash at Etihad Stadium on Friday night.

Malthouse was fined $7500 for calling Milne a "f...ing rapist", while Milne was fined $3000 for making derogatory comments about the Magpies coach's age.

Milne also questioned the sexuality of Collingwood assistant Paul Licuria.

Licuria was fined $3000 for using threatening language towards Milne.

The fines completed an investigation into the incident on Monday in which the Collingwood and St Kilda camps were called into AFL headquarters to give evidence.

AFL football operations general manager Adrian Anderson said Malthouse used language that was "highly offensive", and that it was unacceptable for a senior coach to insult an opposition player during a break in a game.

"This conduct creates a volatile situation on the ground that could easily get out of hand," Anderson said.

"This is not the right example to set for coaches at community level.

"Michael recognises his conduct was wrong and his public apology to Milne was taken into account in his favour in determining his sanction."

Anderson said Licuria's language had the potential to escalate the situation, while Milne was "aggressive and insulting" to both Collingwood coaches.

"Milne used language towards Licuria that was homophobic and unacceptable," Anderson said.

"Milne's public apology was also taken into account in his favour in determining sanction."

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