I don't for one minute think that our owners are bold or ambitious enough to even approach Bielsa yet alone hire him and commit the funds, but I think that an appointment like that would be required to leap frog the other clubs and place us at the forefront of Australian club football, it all depends on our ambition.
There is one other thing to consider as well with people like Bielsa and other O/S coaches. They are used to bringing in players within a budget. South American leagues do not have salary or player caps - just budgets. What we are actually saying to prospective coaches is that these are the caps and you have to work within these constraints. I am not sure how well they could cope with that. In my rather short affiliation with the A League I note that most O/S coaches have not won the either trophy (Sydney FC are the only team to have won honours with O/S coaches). This leads me to wonder whether they can work within such a constrained system. I also note that G Nus was quite surprised by these constraints.
Bielsa, a very strict disciplinarian, likes to demote/promote players based on the fact that he does have other options. In a capped system he would be constrained. Having said that he has a very keen eye for spotting talented youth and the ability to develop them quickly. OTOH our players may not be hungry/desperate enough to meet his demands.