Claudius
Pulled from Transfermarkt (caveat being that both Arteta and Klopp joined mid-season but I've done net spend for full seasons):
Net spend for us for the last 5 seasons (ie. since Arteta rebuild): -€645.5m
Net spend for Liverpool over the same time period from Klopp's first season (ie. rebuild): -€122.5m
Yes, we required a 'bigger' rebuild but I find it hard to suggest that we've been as efficient in our fund allocation.