Melbourne will challenge the AFL Tribunal's decision to hand Steven May a three match ban for rough conduct at the AFL Appeals Board next week.

May and his counsel were unable to sway the tribunal away from a suspension in a lengthy hearing on Wednesday night, which included a 90 minute deliberation between the panel.

The premiership defender was referred directly to the tribunal for his actions in a collision with Carlton's Francis Evans on Saturday night.

May's shoulder made contact with Evans' head after arriving a fraction late to a loose ball contest - leaving the Blue bloodies and concussed during the third term.

In giving evidence, May argued he believed he would take possession of the ball, among other reasons.

The tribunal deemed there was enough time for him to anticipate the collision and change his trajectory or momentum, according to reports.

May's conduct had been graded careless, severe impact and high contact by the MRO.

Footy pundits and players have backed May's actions as a part of the game, despite the unfortunate result of the incident.

"We felt we presented a really strong case and Steven's sole intention was to win the ball, and we believe he provided a contest in a reasonable way given the circumstances," Demons general manager of football Alan Richardson said after the tribunal hearing.

"After reviewing the outcome and seeking further expert legal advice this morning, we have decided to appeal the Tribunal's decision."

May is set to miss three of Melbourne's remaining five home and away matches should the ban be upheld.