At Lille this is understandable as they are not flushed with cash. At Monaco, they experienced that the wild expenditure during the owners first years was not sustainable, hence the shift in going for cheaper and lesser known players but under the correct coaching could turn out be become good, and with the (assumed) hunger to want to improve and work to become good.
He was new to the role at Monaco yes, but he worked as an analyst for JM at RM, worked as a manager and coach etc. So had a good foundation for how to evaluate players, understanding the role of the manager etc.
He is good at spotting talents, seems to be able to achieve good deals and contracts for the players he buys and his approach to identifying players seems to work well.
If he had the resources that our club have, he might change his approach somewhat.
The reason why we would benefit from appointing him are the fact that he seems to understand how to build a squad, how to negotiate contracts and transfers without getting fleeced, despite a small samplesize (Monaco and Lille) what he does seems to work, he values the personality of the players (something we need to do), he got experience and a good trackrecord as a DoF.
If you have not read this article already on Campos, then you should. Not saying that he will be the saviour of this club, but he seems to fit into what we need.
http://breakingthelines.com/manager...-footballs-most-underrated-sporting-director/