In the meantime, we've taken a look at how the career win percentage of every League One boss ranks ahead of the new campaign. This is how Sunderland boss Phil Parkinson shapes up against all 23 of his third-tier managerial adversaries for the 2020/21 season.
17. Sunderland - Phil Parkinson
Career win percentage: 36.7%. Number of games at current club: 30. Photo: Lewis Storey
18. MK Dons - Russell Martin
Career win percentage: 30.4%. Number of games at current club: 23. Photo: Alex Livesey
19. Wigan Athletic - Leam Richardson
Career win percentage: 29.7%. Number of games at current club: 0. Photo: Pete Norton
20. Shrewsbury Town - Sam Ricketts
Career win percentage: 29.5%. Number of games at current club: 78. Photo: Gareth Copley