The AFL tribunal is expected to sit on Tuesday night to hear a charge of misconduct against Fremantle's Nick Suban after an ugly grand final clash with Sam Mitchell.

The match review panel referred the case directly to the tribunal after Suban grabbed Mitchell's face in the first quarter of Saturday's decider at the MCG.

Asked why the case was sent to the tribunal, panel chairman Mark Fraser said: "We weren't comfortable with what the table of offences gave us".

The panel ruled that Suban made unnecessary and unreasonable contact to the face of the Hawthorn star.

The Hawks didn't escape the panel's attention either. Norm Smith Medallist Brian Lake can accept a three-match striking ban and small forward Cyril Rioli faces a one-game suspension for rough conduct.

Hawthorn have until Tuesday morning to decide whether they will accept the bans for Lake and Rioli.

The AFL has a policy of double demerit points for grand final incidents.

Lake would normally have been able to accept a two-game ban for his elbow to the face of Fremantle forward Michael Walters.

Likewise, Rioli would have been able to accept a reprimand for his chicken wing tackle on Michael Barlow.

Former Essendon skipper Matthew Lloyd said he was puzzled by the panel's rulings.

"I think Rioli's was worse than what Brian Lake did," Lloyd told radio 3AW on Monday.