Bielsa was appointed back in June 2018 and went on to transform the club, ending United's 16-year exile from the Premier League by sealing promotion as Championship champions in 2020.
The Whites then stormed to a ninth-placed finish as a newly-promoted side and whilst the second season back has been a disappointment, the memories of some sensational games and unbelievable highs will never be forgotten.
Here we pick out a dozen of Bielsa's best in the Whites hotseat.
Here we pick out a dozen of Bielsa's best in the Whites hotseat.