That might be true in other spheres of activity, but not in football, or sports administration in general. Warren Ryan (IMO the best coach that ever drew breath) was sacked, or left in less than congenial circumstances, from Canterbury, Balmain, and Newcastle. Closer to home, Raelene Castle was booted from the Dogs and Australian Rugby (although both sackings were presented as "mutual decisions"), before sliding into another cushy job in Sports, New Zealand.
Somebody will take Des, and, if they can make him stick to coaching and keep him away from recruitment or the salary cap, they might even get a result out of him.