St Mary's have until two-this afternoon, to decide if they're going to appeal DAVID CLARKE's 15-match ban for making deliberate conduct with an umpire.

The former Cats star was found guilty of conduct unbecoming at the Football Geelong tribunal on Wednesday night.

If he does appeal and it fails, he'll be deregistered by the VCFL, as previous suspensions will put him OVER the 16-game threshold.