I think even that's being generous to him, ok Bergval and Vuskovic were fairly modest fees by todays standards, but he hardly "unearthed" them. Bergval was on his way to Barca before we swayed him, and Vuskovic was a 16 year old starting for a well known Croatian club.
He also spaffed £20-40m on the likes of Odobert, Tel, Gray, etc.
That's not typical unearthing young talent money, that's frittering away full blown first team ready fees on players that don't contribute to the now, and aren't even guaranteed to ever contribute.