Fremantle midfielder Matthew Johnson has been offered a two-match suspension by the match review officer for rough conduct on Dayne Zorko during round 7.

The incident happened in the third quarter and was graded as careless conduct, high impact and high contact.

This is Johnson's first offence but he cannot accept an early plea due to the level of grading of the offence.

Zorko continued to play out the game after the incident but was subbed out in the fourth quarter due to an unrelated hamstring injury.