Blackpool, Reading and Wigan will all be playing in the third tier next term following their relegation from the Championship. The latter will start on minus eight points after failing to pay wages on time.
Meanwhile, Leyton Orient, Stevenage, Northampton and Carlisle all won promotion from League Two last season.
Here is a full list of the ins and outs from each League One club so far this summer
BARNSLEY
In: Kacper Lopata (Woking, free), Ben Killip (Hartlepool, free)
Out: Mads Andersen (Luton, undisclosed), Clarke Odour (Bradford, free), Luke Thomas (Bristol Rovers, free), Jason Sraha (Shrewsbury, free), Jack Butterfill (released), Keegan Hartley (released), Kareem Hassan-Smith (released), Jordan Helliwell (released), Will Lancaster (released), Rudi Pache (released)
BLACKPOOL
In: Albie Morgan (Charlton, free), Matthew Pennington (Shrewsbury, free), Ollie Norburn (Peterborough, undisclosed), Richard O’Donnell (Rochdale, undisclosed), Kyle Joseph (Swansea, undisclosed)
Out: Jerry Yates (Swansea, undisclosed), Reece James (Sheffield Wednesday, undisclosed), Jordan Thorniley (Oxford, free), Curtis Nelson (Derby, free), Luke Garbutt (Salford, free), Stuart Moore (Morecambe, free), Liam Bridcutt (released), Harvey Hughes (released), Beryly Lubala (released), Gary Madine (released), Chris Maxwell (released), Kevin Stewart (released), Joe Strawn (released), Keshi Anderson (released)
BOLTON
In: Nathan Baxter (Chelsea, free), Joel Coleman (Ipswich, free), Josh Dacres-Cogley (Tranmere, free), Dan Nlundulu (Southampton, undisclosed), Will Forrester (Port Vale, undisclosed)
Out: MJ Williams (MK Dons, free), Joel Dixon (Hartlepool, free), Lloyd Isgrove (released), Elias Kachunga (released), Kieran Lee (released)
BRISTOL ROVERS
In: James Wilson (Plymouth, free), Luke Thomas (Barnsley, free), Devani Brown (Exeter, free), George Friend (Birmingham, free)
Out: Harry Anderson (Stevenage, free), Paul Coutts (released), Calum Macdonald (released)
BURTON
In: Josh Gordon (Barrow, free), Cole Stockton (Morecambe, free), Kegs Chauke (Southampton, free), Rekeem Harper (Ipswich, undisclosed), Steve Seddon (Oxford, loan)
Out: Conor Shaughnessy (Portsmouth, free), Craig MacGillivray (MK Dons, free), Jonny Smith (Wigan, free), Cameron Borthwick-Jackson (released), Ben Radcliffe (released), Thierry Latty-Fairweather (released), William Kokolo (released), Louis Moult (released), Chris McCann (released), Sam Winnall (released), Ben Garratt (released), Callum Hawkins (released)
CAMBRIDGE
In: Jack Stevens (Oxford, free), Danny Andrew (Fleetwood, free), Gassan Adahme (Ipswich, loan), Jordan Cousins (Wigan, free)
Out: Joe Ironside (Doncaster, free), Shilow Tracey (Crewe, free), Harvey Knibbs (Reading, free), Greg Taylor (released), Liam O’Neil (released), Dimitar Mitov (released), Sam Smith (released), George Williams (released), Lloyd Jones (released), Ben Worman (released)
CARLISLE
In: Ben Barclay (Stockport, free), Alfie McCalmont (Leeds, undisclosed), Jack Robinson (Middlesbrough, undisclosed), Sam Lavelle (Charlton, undisclosed), Dylan McGeouch (Forest Green, free), Dan Butterworth (Blackburn, free)
Out: Morgan Feeney (Shrewsbury, free), Kristian Dennis (Tranmere, free), Joel Senior (Morecambe, free), Lewis Bell (released), Jamie Devitt, Brennan Dickenson (released), Josh Dixon (released), Sam Fishburn (released), Mick Kelly (released), Tobi Sho-Silva (released), Scott Simons (released)
CHARLTON
In: Harry Isted (Luton, free), Alfie May (Cheltenham, undisclosed)
Out: Jojo Wollacott (Hubernian, undisclosed), Albie Morgan (Blackpool, free), Alex Gilbey (MK Dons, free), Ryan Inniss (Forest green, free), Nathan Harness (MK Dons, free), Macauley Bonne (released), Sean Clare (Wigan, free), Sam Lavelle (Carlisle, undisclosed)
CHELTENHAM
In: Rob Street (Crystal Palace, free), Jamie Pardington (Larne, free), Curtis Davies (Derby, free), Luke Southwood (Reading, free)
Out: Alfie May (Charlton, undisclosed), Charlie Brown (Morecambe, free), Ryan Broom (Fleetwood, free), Charlie Raglan (released), Shaun MacDonald (released), Callum Ebanks (released), Dylan Barkers (released), Zac Guinan (released), Christian Norton (released), Ryan Jackson (Sutton, free)
DERBY
In: Krystian Bielik (Birmingham, undisclosed), Joe Ward (Peterborough, free), Josh Vickers (Rotherham, free), Curtis Nelson (Blackpool, free), Callum Elder (Hull, free), Sonny Bradley (Luton, free), Conor Washington (Rotherham, undisclosed), Kane Wilson (Bristol City, undisclosed)
Out: Jason Knight (Bristol City, undisclosed), David McGoldrick (Notts County, free), James Chester (released), Richard Stearman (released), Curtis Davies (Cheltenham, free)
EXETER
In: Vincent Harper (Eastleigh, undisclosed), Jack Aitchison (Motherwell, free), Reece Cole (Hayes & Yeading, free), Dion Rankine (Chelsea, loan), Ryan Trevitt (Brentford, loan)
Out: Archie Collins (Peterborough, undisclosed), Kevin McDonald (Bradford, free), Jevani Brown (Bristol Rovers, free), Jack Sparkes (Portsmouth, free), Josh Coley (Sutton, undisclosed), Jamal Blackman (released)
FLEETWOOD
In: Ryan Broom (Cheltenham, free), Danny Mayor (Plymouth, free), Adam Montgomery (Celtic, loan), Ryan Graydon (Derry, undisclosed)
Out: Alex Cairns (Salford, free), Danny Andrew (Cambridge, free), Dan Batty (released), Darnell Johnson (released)
LEYTON ORIENT
In: Max Sanders (Lincoln, free), Dan Agyei (Crewe, free), Ethan Galbraith (Man United, free), Sam Howes (Wealdstone, undisclosed), Idris El Mizouni (Ipswich, loan), Sol Brynn (Middlesbrough, loan)
Out: Lawrence Vigouroux (Burnley, undisclosed), Paul Smyth (QPR,free), Craig Clay (Sutton, free), Harry Smith (Leyton Sutton, free), Sonny Fish (released), Anthony Georgiou (released), Jordan Lyden (released), Sam Sargeant (released), Connor Wood (released), Matt Young (released)
LINCOLN
In: Alistair Smith (Sutton, free), Reeco Hackett-Fairchild (Portsmouth, undisclosed), Lukas Jensen (Burnley, free), Jaden Brown (Sheffield Wednesday, free)
Out: Freddie Draper (Walsall, loan), Charles Vernam (Grimsby, free), Max Sanders (Leyton Orient, free), Regan Poole (Portsmouth, free), Joe Walsh (released)
NORTHAMPTON
In: N/A
Out: David Norman (released), Josh Harrop (released), Jonny Maxted (released), Paul Osew (released), Miguel Ngwa (released), Jack Connor (released), Liam Cross (released)
OXFORD
In: Ruben Rodrigues (Notts County, free), Jordan Thorniley (Blackpool, free), Josh McEachran (MK Dons, free), James Beadle (Brighton, loan), Fin Stevens (Brentford, loan), Mark Harris (Cardiff, free)
Out: Jodi Jones (Notts County, free), Jack Stevens (Cambridge, free), Matty Taylor (released), Djavan Anderson (released), Steve Seddon (Burton, loan), Klaidi Lolos (Crawley, free)
PETERBOROUGH
In: Ryan De Havilland (Barnet, undisclosed), Kabongo Tshimanga (Chesterfield, undisclosed), Archie Collins (Exeter, undisclosed), Romoney Crichlow (Huddersfield, free)
Out: Ollie Norburn (Blackpool, undisclosed), Ben Thompson (Stevenage, undisclosed), Jack Taylor (Ipswich, undisclosed), Dan Butler (Stevenage, undisclosed), Joe Ward (Derby, free), Nathan Thompson (Stevenage, free), Benjamin Mensah (released), Christy Pym (Mansfield, undisclosed)
PORTSMOUTH
In: Will Norris (Burnley, free), Christian Saydee (Bournemouth, undisclosed), Conor Shaughnessy (Burton, free), Terry Devlin (Glentoran, undisclosed), Anthony Scully (Wigan, undisclosed), Ben Stevenson (Forest Green, free), Jack Sparkes (Exeter, free), Jusini Yengi (Western Sydney, undisclosed), Gavin Whyte (Cardiff, free), Regan Poole (Lincoln, free)
Out: Reeco Hackett-Fairchild (Lincoln, undisclosed), Louis Thompson (Stevenage, free), Clark Robertson (released), Michael Jacobs (released), Ryan Tunnicliffe (released), Kieron Freeman (released), Jayden Reid (released), Alfie Bridgman (released), Dan Gifford (released)
PORT VALE
In: Mitch Clark (Accrington, free), Tom Sang (Cardiff, free), Alex Iacovitti (Ross County, free), Connor Ripley (Morecambe, free), Jayson Leutwiler (Oldham, free), Conor Grant (Plymouth, free), Ethan Chislett (Wimbledon, free), Jason Lowe (Salford, free), Kofi Balmer (Crystal Palace, loan)
Out: Will Forrester (Bolton, undisclosed), David Worrall (Barrow, free), Jamie Proctor (Barrow, free), Aidan Stone (Notts County, free), Rory Holden (released), Tom Pett (released), Derek Agyakwa (released), Sammy Robinson (released), Lucas Covolan (released)
READING
In: Harvey Knibbs (Cambridge, free)
Out: Tom Ince (Watford, undisclosed), Scott Dann (released), Luke Southwood (Cheltenham, free), Shane Long (released), Liam Moore (released), Lucas Joao (released), Dejan Tetek (released), Lui Bradbury (released), Ethan Burnett (released), Josh Green (released), Nahum Melvin-Lambert (released), Kian Leavy (released), Claudio Osorio (released), Rashawn Scott (released)
SHREWSBURY
In: Taye Ashby-Hammond (Fulham, free), Morgan Feeney (Carlisle, free), Elliot Thorpe (Luton, loan), Jason Sraha (Barnsley, free), Tunmise Sobowale (Waterford, undisclosed)
Out: Luke Leahy (Shrewsbury, undisclosed), Matthew Pennington (Blackpool, free), Rekeil Pyke (Grimsby, free), Elliott Bennett (released), Jaden Bevan (released), Xander Parke (released), Kade Craig (released), Josh Barlow (released), Charlie Caton (released)
STEVENAGE
In: Nathan Thompson (Peterborough, free), Nick Freeman (Wycombe, free), Alex MacDonald (Gillingham, free), Harry Anderson, Bristol Rovers, free), Louis Thompson (Portsmouth, free), Ben Thompson (Peterborough, undisclosed), Dan Butler (Peterborough, undisclosed)
Out: Danny Rose (Grimsby, undisclosed), Jake Reeves (Wimbledon, free), Max Clark (Gillingham, free), Luke Norris (Tranmere, free), Adam Przybek (released), Michael Bostwick (released), Jake Taylor (released)
WIGAN
In: Jonny Smith (Burton, free), Liam Morrison (Bayern Munich, loan), Matt Smith (Arsenal, free), Sean Clare (Charlton, free)
Out: Anthony Scully (Wigan, undisclosed), Joe Bennett (released), Steven Caulker (released), Jordan Cousins (Cambridge, free), Tendayi Darikwa (released), Gwion Edwards (released), Ryan Nyambe (released), Will Keane (Preston, undisclosed)
WYCOMBE
In: Richard Keogh (Ipswich, free), Kian Breckin (Manchester City, loan), Luke Leahy (Shrewsbury, undisclosed), Harry Boyes (Sheffield United, loan), Kane Vincent-Young (Ipswich, free)
Out: Nick Freeman (Stevenage, free), Curtis Thompson (released), Lewis Wing (released), Tyla Dickinson (released), Jordan Willis (released), Daryl Horgan (released), Adam Leathers (released), Josh Blunkell (released), Charles Hagan (released), Arnold Matshazi (released), Ben Kaninda (released)