Port Adelaide's AFL premiership defence was dealt another blow with ruckman Dean Brogan facing a three-game suspension for headbutting.

Brogan was offered a three-match suspension by the AFL match review panel if he pleaded guilty to a misconduct charge over a headbutt on former teammate Barnaby French during Port's draw with Carlton at the weekend.

Port Adelaide has until Tuesday morning to decide whether to accept the ban or fight the charge at the tribunal.

If Brogan is found guilty by the tribunal, he would have his suspension lifted to four matches.

Already without Norm Smith Medallist Byron Pickett through suspension and defender Chad Cornes and Shaun Burgoyne through injury, Brogan's loss would further weaken his side ahead of its clash with in-form Geelong on Friday night.

Port has won only one of its four matches this season.

Sydney captain Stuart Maxfield will serve a one-match suspension after agreeing to an early guilty plea on a rough conduct charge.

Maxfield had been reported for an incident involving Adelaide's Simon Goodwin in the third quarter of the Swans' loss.

Sydney confirmed it would accept the AFL match review panel's decision.

But Melbourne's Aaron Davey has escaped with a reprimand for striking St Kilda's Justin Peckett during the Saints' victory over the Demons.

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