During Marcelo Bielsa's tenure at Leeds United, he transformed the fortunes of a club which had been stranded in the doldrums for the bulk of its time in the Championship.
He led the club to the second tier title in 2020, before guiding the Whites into the top half of the Premier League immediately after securing promotion.
This rejuvenation was made more impressive by the fact it was not fuelled by a relatively huge injection of cash and a squad overhaul.