You realise most key backmen are failed fwds don't you?, just like most small defenders are failed mids/fwds, i'd be mindful of that if i were you, Collingwood turned Leon Davis (who had never seen the defensive end of the ground) into an AA defender within 12 months, we turned Ben Reid into an AA CHB within 2 years.
Crameri has the tools to play anywhere.
So on off chance that Crameri can be turned into a defender we should grab him - no thanks!