| 01 Sept 15 | L. Grimshaw Liam Grimshaw |  Manchester UnitedMAN | → |  MotherwellMOT | Loan |
| 01 Sept 15 | V. van Dijk Virgil van Dijk |  CelticCEL | → |  SouthamptonSOU | Undisclosed |
| 01 Sept 15 | T. Sho-Silva Tobi Sho-Silva |  Charlton AthleticCHA | → |  Inverness Caledonian ThistleICT | Loan |
| 01 Sept 15 | A. Kuhl Aaron Kuhl |  ReadingREA | → |  Dundee UnitedDUN | Loan |
| 01 Sept 15 | R. Healey Rhys Healey |  Cardiff CityCAR | → |  DundeeDUN | Loan |
| 01 Sept 15 | L. Grimshaw Liam Grimshaw | Manchester UnitedMAN | → | MotherwellMOT | Loan |
| 01 Sept 15 | V. van Dijk Virgil van Dijk | CelticCEL | → | SouthamptonSOU | Undisclosed |
| 01 Sept 15 | A. Taggart Adam Taggart |  FulhamFUL | → | Dundee UnitedDUN | Loan |
| 01 Sept 15 | R. Healey Rhys Healey | Cardiff CityCAR | → | DundeeDUN | Loan |
| 01 Sept 15 | A. Kuhl Aaron Kuhl | ReadingREA | → | Dundee UnitedDUN | Loan |
| 01 Sept 15 | T. Sho-Silva Tobi Sho-Silva | Charlton AthleticCHA | → | Inverness Caledonian ThistleICT | Loan |
| 01 Sept 15 | A. Taggart Adam Taggart | FulhamFUL | → | Dundee UnitedDUN | Loan |
| 31 Aug 15 | R. Calder Riccardo Calder |  Aston VillaAVL | → | DundeeDUN | Loan |
| 31 Aug 15 | R. Calder Riccardo Calder | Aston VillaAVL | → | DundeeDUN | Loan |
| 29 Aug 15 | T. Blackett Tyler Blackett | Manchester UnitedMAN | → | CelticCEL | Loan |
| 29 Aug 15 | T. Blackett Tyler Blackett | Manchester UnitedMAN | → | CelticCEL | Loan |
| 29 Aug 15 | R. McLaughlin Ryan McLaughlin |  LiverpoolLIV | → |  AberdeenABER | Loan |
| 29 Aug 15 | R. McLaughlin Ryan McLaughlin | LiverpoolLIV | → | AberdeenABER | Loan |
| 14 Aug 15 | S. Allan Scott Allan |  HibernianHIBS | → | CelticCEL | Undisclosed |
| 11 Aug 15 | J. Taylor Jake Taylor | ReadingREA | → | MotherwellMOT | Loan |
| 11 Aug 15 | J. Taylor Jake Taylor | ReadingREA | → | MotherwellMOT | Loan |
| 11 Aug 15 | O. Davies Oliver Davies |  Swansea CitySWA | → |  KilmarnockKIL | Loan |
| 11 Aug 15 | O. Davies Oliver Davies | Swansea CitySWA | → | KilmarnockKIL | Loan |
| 28 Jul 15 | D. Bachmann Daniel Bachmann |  Stoke CitySTK | → |  Ross CountyROSS | Loan |
| 28 Jul 15 | D. Bachmann Daniel Bachmann | Stoke CitySTK | → | Ross CountyROSS | Loan |
| 13 Jul 15 | C. Morris Carlton Morris |  Norwich CityNOR | → |  Hamilton AcademicalHAM | Loan |
| 13 Jul 15 | C. Morris Carlton Morris | Norwich CityNOR | → | Hamilton AcademicalHAM | Loan |
| 03 Jul 15 | A. Matthews Adam Matthews | CelticCEL | → |  SunderlandSUN | 2000000 |
| 03 Jul 15 | A. Matthews Adam Matthews | CelticCEL | → | SunderlandSUN | 2000000 |
| 02 Jul 15 | S. Janko Saidy Janko | Manchester UnitedMAN | → | CelticCEL | Undisclosed |
| 02 Jul 15 | S. Janko Saidy Janko | Manchester UnitedMAN | → | CelticCEL | Undisclosed |
| 01 Jul 15 | L. Erwin Lee Erwin | MotherwellMOT | → |  Leeds UnitedLEE | Free |
| 01 Jul 15 | D. Boyata Dedryck Boyata |  Manchester CityMNC | → | CelticCEL | Undisclosed |
| 01 Jul 15 | S. Hendrie Stephen Hendrie | Hamilton AcademicalHAM | → |  West Ham UnitedWHU | Undisclosed |
| 01 Jul 15 | L. Erwin Lee Erwin | MotherwellMOT | → | Leeds UnitedLEE | Free |
| 01 Jul 15 | D. Ward Danny Ward | LiverpoolLIV | → | AberdeenABER | Loan |
| 01 Jul 15 | D. Ward Danny Ward | LiverpoolLIV | → | AberdeenABER | Loan |
| 01 Jul 15 | S. Hendrie Stephen Hendrie | Hamilton AcademicalHAM | → | West Ham UnitedWHU | Undisclosed |
| 01 Jul 15 | D. Boyata Dedryck Boyata | Manchester CityMNC | → | CelticCEL | Undisclosed |
| 02 Feb 15 | G. Mackay-Steven Gary Mackay-Steven | Dundee UnitedDUN | → | CelticCEL | Undisclosed |
| 02 Feb 15 | P. Dixon Paul Dixon |  Huddersfield TownHUD | → | Dundee UnitedDUN | Free |
| 02 Feb 15 | B. O'Hanlon Ben O'Hanlon |  Wolverhampton WanderersWOL | → | DundeeDUN | Free |
| 02 Feb 15 | C. Grant Conor Grant |  EvertonEVE | → | MotherwellMOT | Loan |
| 02 Feb 15 | F. Twardzik Flip Twardzik | CelticCEL | → |  Bolton WanderersBOL | Undisclosed |
| 02 Feb 15 | P. Dixon Paul Dixon | Huddersfield TownHUD | → | Dundee UnitedDUN | Free |
| 02 Feb 15 | B. O'Hanlon Ben O'Hanlon | Wolverhampton WanderersWOL | → | DundeeDUN | Free |
| 02 Feb 15 | C. Grant Conor Grant | EvertonEVE | → | MotherwellMOT | Loan |
| 02 Feb 15 | Tony Andreu | Hamilton AcademicalHAM | → | Norwich CityNOR | Undisclosed |
| 02 Feb 15 | A. Andreu Anthony Andreu | Hamilton AcademicalHAM | → | Norwich CityNOR | Undisclosed |
| 02 Feb 15 | A. Andreu Anthony Andreu | Hamilton AcademicalHAM | → | Norwich CityNOR | Undisclosed |
| 02 Feb 15 | Tony Andreu | Hamilton AcademicalHAM | → | Norwich CityNOR | Undisclosed |
| 02 Feb 15 | S. Armstrong Stuart Armstrong | Dundee UnitedDUN | → | CelticCEL | Undisclosed |
| 02 Feb 15 | F. Twardzik Flip Twardzik | CelticCEL | → | Bolton WanderersBOL | Undisclosed |
| 30 Jan 15 | W. McKay William McKay | Inverness Caledonian ThistleICT | → |  Wigan AthleticWGA | Undisclosed |
| 30 Jan 15 | L. Laing Louis Laing |  Nottingham ForestFOR | → | MotherwellMOT | Loan |
| 30 Jan 15 | W. McKay William McKay | Inverness Caledonian ThistleICT | → | Wigan AthleticWGA | Undisclosed |
| 30 Jan 15 | L. Laing Louis Laing | Nottingham ForestFOR | → | MotherwellMOT | Loan |
| 29 Jan 15 | B. Kiyal Biram Kiyal | CelticCEL | → |  Brighton & Hove AlbionBHA | Undisclosed |
| 29 Jan 15 | B. Kiyal Biram Kiyal | CelticCEL | → | Brighton & Hove AlbionBHA | Undisclosed |
| 27 Jan 15 | D. Daniels Donervon Daniels |  West Bromwich AlbionWBA | → | AberdeenABER | Loan |
| 27 Jan 15 | D. Daniels Donervon Daniels | West Bromwich AlbionWBA | → | AberdeenABER | Loan |
| 15 Jan 15 | C. Burgess Cameron Burgess | FulhamFUL | → | Ross CountyROSS | Loan |
| 15 Jan 15 | C. Burgess Cameron Burgess | FulhamFUL | → | Ross CountyROSS | Loan |