I dont think there was ever any serious working partnership with Walsh and Koeman. The latter came in like a wrecking ball determined to do it his way. The massive fees paid for tat was down to Koeman becuase he was "in a hurry" and wasn't concerned about bringing in young talent or unheard of talent.
Walsh's record of signings at Leicester needs no spin, and he also signed good players for Everton like Lookman and Gueye.
Ok, he is no DoF, but he deserves no stick for being here at the same time that Koeman was. The expensive flops were Koeman's mistakes - the vast majority of them. I notice the Echo are spinning that line again today of a Walsh-inspired fiasco. Typical of that clueless bunch of hacks.
There will be a lot of black and white revisionism with Walsh. As with most things it's never quite black and white.
That being said he had two major faults for me, which were linked. The first was he didn't close enough deals, the 2nd that he didn't control the process and essentially subordinate the manager (so essentially insist on his players).
He was very keen on Bailey, Gray (from Leicester at 12 million) Mendy (who's just gone to Madrid), Isak. Regarding young players he liked both the Sessegnon twins, Brooks, Adawairo (City player) as well as Hirst and Zizkee as younger players. Had we have added the above players, instead of those Koeman insisted upon we'd have had a squad worth far more money and with the right coach one that could have developed.
Fair is fair, some we were linked with Belfodil & Gabbiadini who we were heavily linked with have flopped so we dodged a bullet there. Likewise I have little doubt Sandro was his pick and that was a poor buy.
However Gana was an excellent signing, Keane & Pickford while not faultless have proven to be decent enough and the younger players signed, Lookman, Vlasic, Onyekuru, Gibson etc will all prove to be smart buys. If he'd have trusted his approach more he'd have probably done much better.
The wider issue lay above Walsh though. You got a guy in as DOF who was essentially a scout and couldn't close deals. You stuck him into an infrastructure that couldn't close deals and worked in a slow, meticulous and cautious way. Then you had a domineering manager who wanted success quickly and an owner who was briefing the press it would be like City. It's an impossible situation. His skill at Leicester was finding diamonds at a knockdown price and over time feeding them in. It was never the job we needed.
If I am honest, it's not the job United want either. He will do very poorly there, not because he has no skill, but because the role doesn't suit him.