Conor Nash has been hit with a four-match ban by the AFL Tribunal.
The Hathorn midfielder's suspension comes after a swinging arm on Geelong's Gryan Miers.
Miers was substituted out of the Easter Monday game with a concussion.
Nash, who was sent directly to the tribunal for the incident, will now be sidelined for a month of footy.
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During Wednesday evening's Tribunal hearing, the Irishman argued he was trying to knock the ball forward.
Nash declared he only had eyes for the ball, while also revealing he sent a text of apology to Miers.
However, Nash's request for a three-week ban was not granted.
The 26-year-old will miss games against West Coast, Richmond, Melbourne and Gold Coast.
Miers, meanwhile, will be absent from the Cats' upcoming clash with Carlton due to concussion protocols.