Longest current tenure

Longest current tenure in Premier League
Manager Days
Pep Guardiola (Manchester City) 3306
Mikel Arteta (Arsenal) 2037
Marco Silva (Fulham) 1480
Eddie Howe (Newcastle United) 1350
Unai Emery (Aston Villa) 992
Andoni Iraola (Bournemouth) 762
Daniel Farke (Leeds United) 747
Longest current tenure in Championship
Manager Days
Phil Parkinson (Wrexham) 1480
Kieran McKenna (Ipswich Town) 1312
John Mousinho (Portsmouth) 912
Danny Röhl (Sheffield Wednesday) 646
Nathan Jones (Charlton Athletic) 532
Chris Davies (Birmingham City) 409
Paul Heckingbottom (Preston North End) 334
Longest current tenure in League One
Manager Days
Nigel Clough (Mansfield Town) 1717
Dave Challinor (Stockport County) 1356
Richie Wellens (Leyton Orient) 1229
Johnnie Jackson (AFC Wimbledon) 1161
Gary Caldwell (Exeter City) 1000
Darren Ferguson (Peterborough United) 928
Grant McCann (Doncaster Rovers) 800
Longest current tenure in League Two
Manager Days
Simon Weaver (Harrogate Town) 5904
Andy Woodman (Bromley FC) 1574
Dean Brennan (Barnet) 1399
Paul Cook (Chesterfield) 1256
Lee Bell (Crewe Alexandra) 989
Mat Sadler (Walsall) 823
Micky Mellon (Oldham Athletic) 646
  The longest managerial reign of all time in the English football league belongs to Fred Everiss, who was manager of West Bromwich Albion for over 45 years (from 1902 to 1948)