Leicester fan here.
Have to say, the signings you've made don't feel like Walsh signings. Only Gueye does, because of his insane stats at previous clubs and also Keane because he worked with Walsh previously.
He built up a strong scouting network here at Leicester which would have helped him find/secure his targets. I'm guessing he doesn't have the same kind of support structure at your club?
As a DOF, isn't Walsh's main job to secure the signings? So maybe Koeman is specifying who he wants & it's Walsh's job to persuade the player to sign? If this is the case, then Walsh's best talents are being under utilised imo! I mean.. he was a coach with us, not just a scout. So he was on the training pitch every day, analysing & observing where we needed to strengthen & then finding the right targets.
(Apologies I don't know how your club is run/Walsh's specific role so do correct me if I'm wrong!).