Aberdeen
Peter Ambrose (Újpest), Topi Keskinen (HJK Helsinki), Dimitar Mitov (St. Johnstone), Gavin Molloy (Shelbourne), Sivert Heltne Nilsen (SK Brann), Kevin Nisbet (Millwall, loan), Ante Palaversa (ES Troyes)
Celtic
Paulo Bernardo (SL Benfica), Arne Engels (FC Augsburg), Adam Idah (Norwich City), Luke McCowan (Dundee), Kasper Schmeichel (RSC Anderlecht), Viljami Sinisalo (Aston Villa), Auston Trusty (Sheffield United), Álex Valle (Barcelona, loan)
Dundee
Oluwaseun Adewumi (Burnley, loan), Sammy Braybrooke (Leicester City, loan), Ethan Ingram (West Bromwich Albion), Billy Koumetio (Liverpool), Ziyad Larkeche (Queen's Park Rangers, loan), Jon McCracken (Norwich City), Simon Murray (Ross County), Seb Palmer-Houden (Bristol City, loan), Clark Robertson (MS Ashdod)
Dundee United
Emmanuel Adegboyega (Norwich City, loan), David Babunski (Mezokövesdi Sport Egyesület), Sam Dalby (Wrexham, loan), Will Ferry (Cheltenham Town), Richard Odada (Philadelphia Union), Dave Richards (Crewe Alexandra), Vicko Ševelj (NK Radomlje), Luca Stephenson (Liverpool, loan), Ryan Strain (St. Mirren), Kristijan Trapanovski (Shkupi), Jort van der Sande (ADO Den Haag) Meshack Ubochioma (Zalaegerszegi TE), Jack Walton (Luton Town, loan)
Heart of Midlothian
Malachi Boateng (Crystal Palace), Yan Dhanda (Ross County), Musa Drammeh (Sevilla Atletico), Ryan Fulton (Hamilton Academical), Daniel Oyegoke (Brentford), James Penrice (Livingston), Andres Salazar (Atlético Nacional, loan), Blair Spittal (Motherwell), Gerald Taylor (Deportivo Saprissa, loan)
Hibernian
Kieron Bowie (Fulham), Josef Bursik (Club Brugge, loan), Nicky Cadden (Barnsley), Marvin Ekpiteta (Blackpool), Junior Hoilett (Aberdeen), Jack Iredale (Bolton), Mykola Kuharevich (Swansea, loan), Hyeokkyu Kwon (Celtic, loan), Warren O'Hora (MK Dons), Jordan Smith (Stockport County), Nectar Triantis (Sunderland, loan)
Kilmarnock
Bruce Anderson (Livingston), Oliver Bainbridge (Sunderland, loan), Jack Burroughs (Coventry City, loan), Stuart Findlay (Oxford United, loan), Robby McCrorie (Rangers), Corrie Ndaba (Ipswich Town)
Motherwell
Kofi Balmer (Crystal Palace), Ross Callachan (Ross County), Liam Gordon (St. Johnstone), Krisztián Hegyi (West Ham, loan), Marvin Kaleta (Wolves, loan), Johnny Koutroumbis (Perth Glory),Tawanda Maswanhise (Leicester City), Zach Robinson (AFC Wimbledon), Steve Seddon (Oxford United), Tom Sparrow (Stoke City), Filip Stuparevic (Domžale), Apostolos Stamatelopoulos (Newcastle Jets), Jair Tavares (Hibernian, loan), Jack Vale (Blackburn Rovers, loan), Tony Watt (Dundee United, loan)
Rangers
Nedim Bajrami (Sassuolo), Connor Barron (Aberdeen), Václav Černy (Wolfsburg, loan), Oscar Cortes (RC Lens, loan with obligation to buy), Hamza Igamane (AS FAR), Jefte (Fluminense), Neraysho Kasanwirjo (Feyenoord, loan), Liam Kelly (Motherwell), Clinton Nsiala (AC Milan), Robin Pröpper (FC Twente)
Ross County
Eli Campbell (Everton, loan), Noah Chilvers (Colchester United), Aidan Denholm (Heart of Midlothian, loan), Jack Grieves (Watford, loan), Jack Hamilton (Livingston), Ronan Hale (Cliftonville), Ricki Lamie (Dundee), Kacper Lopata (Barnsley, loan), Joshua Nisbet (Central Coast Mariners), Charlie Telfer (Airdrieonians), Will Nightingale (AFC Wimbledon, loan), Akil Wright (Stockport County)
St. Johnstone
Kyle Cameron (Notts County, loan), Arran Cocks (Brook House College), Aaron Essel (Bechem United), Uche Ikpeazu (Port Vale), Makenzie Kirk (Heart of Midlothian), Josh McPake (Stirling Albion), Lewis Neilson (Heart of Midlothian, loan), Josh Rae (Airdrieonians), Andre Raymond (Vilar de Perdizes), Jack Sanders (Kilmarnock)
St. Mirren
Dennis Adeniran (Hapoel Petah Tikva), Ellery Balcombe (Brentford, loan), Jaden Brown (Lincoln City), Alex Iacovitti (Port Vale), Roland Idowu (Shrewsbury Town, loan), Killian Phillips (Crystal Palace, loan), Shaun Rooney (Fleetwood Town), Oisin Smyth (Oxford United), Kevin van Veen (FC Groningen, loan)