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.
7. Liverpool 4 Leeds United 3 - September 2020
Leeds United's first game back in the Premier League ended in defeat but Liverpool boss Jurgen Klopp's reaction at full time spoke volumes. "Wow." Photo by Shaun Botterill/Getty Images.
8. Leeds United 1 Manchester City 1 - October 2020
It was Marcelo Bielsa versus Pep Guardiola in English football for the first time and a game resembling a basketball match most definitely did not disappoint, Rodrigo drawing Leeds level for a 1-1 draw. Photo by Catherine Ivill/Getty Images.
9. Aston Villa 0 Leeds United 3 - October 2020
Leeds were well and truly up and running as a Premier League side and the Whites had 27 attempts at goal en route to a brilliant win at Aston Villa as Patrick Bamford struck a hat-trick. Photo by Nick Potts - Pool/Getty Images.
10. Manchester City 1 Leeds United 2 - April 2021
Leeds had some outstanding results in their first season back in the Premier League and the 2-1 win at Manchester City via a Stuart Dallas race, despite being down to ten men, was the best of them. Photo by MICHAEL REGAN/AFP via Getty Images.
11. Leeds United 3 Tottenham Hotspur 1 - May 2021
Marcelo Bielsa's side put in a superb performance to record a 3-1 victory at home to Champions League chasing Tottenham to send the Whites ninth. Along with the City and Leicester wins, it was one of the best of the season. Photo by Oli Scarff - Pool/Getty Images.
12. West Ham 2 Leeds United 3 - January 2022
Leeds had a whole team out injured yet produced a fantastic display to record a 3-2 victory via a Jack Harrison hat-trick. It seemed the only way was up yet it proved Bielsa's last win in charge. Photo by MICHAEL REGAN/AFP via Getty Images.