Before the Argentine's arrival as manager in 2018, there were 14 others who have tried and failed to get Leeds back into the top flight since the club's relegation in 2004.
13. Thomas Christiansen (June 2017 - February 2018)
Christiansen took Leeds briefly to top spot, but the former Barcelona striker's eight-month spell in charge ended with the sack after a seven-game winless run left them 10th, seven points off the top six. Photo: Mike Egerton/PA Wire
14. Paul Heckingbottom (February 2018 - June 2018)
Heckingbottom, Leeds' ninth manager in four years, was sacked after four months and 16 games in charge. Leeds, who finished 13th in the Championship, were to embark on a new season with a new manager for the fifth successive year. Photo: Nick Potts/PA Wire