I completely agree with you, and we just have to read the below article from Duncan Castles (pre Jurgen Klopp) who absolutely rips into Liverpool and their transfer committee led by Michael Edwards to see the difference a head coach can make to the functionality of a recruitment team. The quoted bit below also highlights that Michael Edwards was roundly criticised for being 'clueless'. And it's the same Edwards that was part of a failed DoF team under Damien Comolli, and a failed transfer committee, that is now lauded as being a genius. The line between success and failure is a fine one, and a head coach that comes in and meshes well with the recruitment department at the club has the potential to make a huge difference like we've seen at Liverpool.
What's not good is for a club to hire a manager who will make demands that go against the wishes of the clubs recruitment department like we've seen with Brendan Rodgers at Liverpool and Mourinho at United. Ole was also to a lesser extent allowed to sign big money players that according to credible journalists were signings that were vetoed by the recruitment staff a year earlier. The biggest mistake a club can make is to hire a manager who makes demands independently from the recruitment depart already at the club. And if that happens the club is in trouble. And United and Liverpool are two examples of why that isn't a sustainable way to operate on the football side of the club.
So all three of the aforementioned managers had one thing in common, and that was that they arrived in their roles as managers and were allowed recruitment staff to work with them independently from the clubs (United & Liverpool) own recruitment staff that were far bigger in number and had the resources to provide thorough and detailed reports on potential new recruits. This our biggest failure post LVG imo, and it's playing exactly like what happened at Liverpool under Rodgers. But i'd say Edwards and the team working under him, faced a lot more ridicule as the below article from Duncan Castles states.
Duncan Castles: "How do you spend more than £215 million on transfer and loan fees and sign 24 footballers but end up with only two who have significantly improved your first team?"
"You hire
Liverpool's infamous "Transfer Committee."
"In their first summer working together, Edwards pushed for
Fiorentina centre-back Matija Nastasic to be recruited. Rodgers wanted a player with Premier League experience, but during the standoff,
Manchester City bought the Serb instead."
"For two Anfield years,
Luis Suarez's unalloyed excellence compensated for a multitude of recruitment and coaching sins. Yet between Edwards' faith in analytics and Rodgers' poor eye for a player, Liverpool have managed to blow well in excess of £250,000,000 pounds once payoffs and agents' fee are factored in."
"Even the committee's conspicuous success, Daniel Sturridge, was recommended by an unconvinced Rodgers to only be brought in on loan."
"If you were the man who paid this pair (Rodgers & Edwards) to run your football club, you'd be forgiven for wondering if you might not be better off replacing both of them."
https://syndication.bleacherreport....ittee-has-been-a-spectacular-failure.amp.html