Didn't realise he's the 5th longest serving manager in the top 4 tiers of English football...
1. Simon Weaver (Harrogate Town) - 11 years, 73 days
2. Gareth Ainsworth (Wycombe) - 7 years, 313 days
3. Sean Dyche (Burnley) - 7 years, 277 days
4. John Coleman (Accrington Stanley) - 5 years, 319 days
5. Jurgen Klopp (Liverpool) - 4 years, 299 days
6. Mark Cooper (Forest Green) - 4 years, 85 days
7. Chris Wilder (Sheffield United) - 4 years, 82 days
8. Pep Guardiola (Manchester City) - 4 years, 32 days
9. Paul Warne (Rotherham) - 3 years, 248 days
10. David Artell (Crewe) - 3 years, 207 days