Chopper_Read found this so you might be right. Seems 18 was his sweet spot. christ can you imagine the Waccoe transfer window meltdown if we had an 18 man squad and no interest in making signings?
**Leeds were without six regular starters at Tottenham and seven of their nine substitutes were under-23s players with next to no first-team experience.
But Bielsa argued his preference for an 18-man squad, supplemented by the club’s leading academy players, had allowed for the development of the likes of Joe Gelhardt and Charlie Cresswell.**
