Ahead of the big kick-off this weekend, here's a summary of players brought in by SPFL clubs across all four divisions during the summer:
Ladbrokes Premiership
Aberdeen
Miles Storey (Swindon Town)
Jayden Stockley (Bournemouth)
Callum Morris (Dundee United)
Joe Lewis (Cardiff City)
Neil Alexander (Hearts)
Anthony O'Connor (Burton Albion)
Wes Burns (Bristol City, loan)
Celtic
Kristoffer Ajer (IK Start)
Moussa Dembele (Fulham)
Kolo toure (Liverpool)
Dundee
Danny Williams (Inverness Caley Thistle)
James Vincent (Inverness Caley Thistle)
Yordi Teijsse (Quick Boys)
Mark O'Hara (Kilmarnock)
Michael Duffy (Celtic, loan)
Faissal El Bakhtaoui (Dunfermline Athletic)
Hamilton Accies
Jordan McGregor (Hibernian)
Jack Breslin (Celtic)
Remi Matthews (Norwich City, loan)
Massimo Donati (Bari)
Gary Woods (Leyton Orient)
Georgios Sarris (Kayseri Erciyesspor)
Heart of Midlothian
Robbie Muirhead (Dundee United)
Conor Sammon (Derby County)
Faycal Rherras (St Truiden)
Paul Gallacher (Partick Thistle)
Viktor Noring (Lyngby BK)
Tony Watt (Charlton Athletic, loan)
Bjorn Johnsen (Litex Lovech)
Inverness Caley Thistle
Scott Boden (Newport County)
Jake Mulraney (Queens Park Rangers)
Billy King (Heart of Midlothian, loan)
Kevin McNaughton (Wigan Athletic)
Kilmarnock
Jamie Cobain (Newcastle United)
Souleymane Coulibaly (Peterborough United)
Jordan Jones (Middlesbrough)
Callum McFadzean (Sheffield United)
Martin Smith (Sunderland)
Joshua Webb (Aston Villa)
Flo Bojaj (Huddersfield Town, loan)
Will Boyle (Huddersfield Town, loan)
Oliver Davies (Swansea City, loan)
Mark Waddington (Stoke City, loan)
Jonathan Burn (Middlesbrough, loan)
Motherwell
Ben Heneghan (Chester)
Richard Tait (Grimsby Town)
Jacob Blyth (Leicester City)
Dean Brill (Inverness Caley Thistle)
Carl McHugh (Plymouth Argyle)
Lee Lucas (Swansea City)
Craig Clay (Grimsby Town)
Partick Thistle
Chris Erskine (Dundee United)
Ade Azeez (AFC Wimbledon)
Danny Devine (Inverness Caley Thistle)
David Syme (Kilmarnock)
Ziggy Gordon (Hamilton Accies)
David Crawford (Alloa Athletic)
Rangers
Josh Windass (Accrington Stanley)
Matt Crooks (Accrington Stanley)
Jordan Rossiter (Liverpool)
Joey Barton (Burnley)
Clint Hill (Queens Park Rangers)
Niko Kranjcar (New York Cosmos)
Matt Gilks (Burnley)
Lee Hodson (MK Dons)
Joe Dodoo (Leicester City)
Ross County
Christopher Routis (Bradford City)
Kenny van der Weg (NAC Breda)
Aaron McCarey (Wolves)
Erik Cikos (Slovan Bratislava)
Jay McEveley (Sheffield United)
St Johnstone
Michael Coulson (York City)
Keith Watson (St Mirren)
Blair Alston (Falkirk)
Paul Paton (Dundee United)
Ladbrokes Championship
Ayr United
Paul Cairney (Stranraer)
Michael Rose (Aberdeen)
Daryll Meggatt (Dundee)
Jordan Hart (Annan Athletic)
Jamie Thomas (Burnley, loan)
Craig Moore (Motherwell, loan)
Dumbarton
Robert Thomson (Brechin City)
Andy Stirling (Stranraer)
Craig Pettigrew (Stranraer)
Ryan Stevenson (Ayr United)
David Smith (Falkirk)
Jamie Barclay (Stenhousemuir)
Josh Todd (Annan Athletic)
Dundee United
Stewart Murdoch (Ross County)
Cammy Bell (Rangers)
Brett Long (Motherwell)
Lewis Toshney (Raith Rovers)
Tope Obadeyi (Kilmarnock)
Cammy Smith (Aberdeen, loan)
Willo Flood (Dundee United)
Nick van der Velden (Willem II)
Dunfermline Athletic
Nat Wedderburn (Inverness Caley Thistle)
Lee Ashcroft (Kilmarnock)
Gavin Reilly (Hearts, loan)
Paul McMullan (Celtic, loan)
Euan Spark (Dundee United)
Kallum Higginbotham (Kilmarnock)
Falkirk
James Craigen (Raith Rovers)
Liam Henderson (Hearts)
Lewis Kidd (Queen of the South)
Luca Gasparotto (Rangers)
Danny Rogers (Aberdeen, loan)
John Rankin (Dundee United)
Hibernian
Grant Holt (Rochdale)
Ross Laidlaw (Raith Rovers)
Ofir Marciano (FC Ashdod, loan)
Morton
Michael Doyle (St Johnstone)
Gary Oliver (Queen of the South)
Jamie McDonagh (Sheffield United)
Caolan McAleer (Airdrieonians)
Jamie Lindsay (Celtic, loan)
Queen of the South
Steven Rigg (Carlisle United)
Jamie Hamill (Kilmarnock)
Lyndon Dykes (Surfers Paradise)
Grant Anderson (Raith Rovers)
Lee Robinson (Unattached)
Raith Rovers
Bobby Barr (Morton)
Chris Johnston (Kilmarnock)
Kevin McHattie (Kilmarnock)
Aaron Lennox (Aberdeen, loan)
Jean-Yves M’Voto Owono (Zawisza Bydgoszcz)
Yaw Osei (Chalfont St Peter)
Joel Coustrain (Sheffield United)
Scott Roberts (Rangers, loan)
Declan McManus (Fleetwood Town, loan)
Rudi Skacel (Mlada Boleslav)
St Mirren
Kyle Hutton (Queen of the South)
David Clarkson (Motherwell)
Ben Gordon (Livingston)
Gary MacKenzie (Doncaster Rovers)
Scott Gallacher (Alloa Athletic)
John Sutton (St Johnstone)
Tom Walsh (Rangers, loan)
Lawrence Shankland (Aberdeen, loan)
Ryan Hardie (Rangers, loan)
Ladbrokes League 1
Airdrieonians
Andy Ryan (Forfar Athletic)
Iain Russell (Queen of the South)
Joe Gorman (Maidenhead United)
Ryan Conroy (Queen of the South)
James Daly (Drogheda United)
Kevin Schmidt (East Kilbride)
Albion Rovers
Ryan Wallace (Dunfermline Athletic)
Calum Ferguson (Inverness Caley Thistle)
Ross Gilmour (East Stirlingshire)
Ross Stewart (Kilwinning Rangers)
Alloa Athletic
Neil Parry (Airdrieonians)
Kevin Cawley (Dumbarton)
Jordan Kirkpatrick (Clyde)
Jamie Longworth (Stranraer)
Jon Robertson (Stenhousemuir)
Scott Taggart (Dumbarton)
Greig Spence (Cowdenbeath)
Calum Waters (Celtic)
Andy Graham (Ayr United)
Jim Goodwin (St Mirren)
Craig McDowall (unattached)
Brechin City
Ally Love (Albion Rovers)
Chris O'Neil (Airdrieonians)
Alan Trouten (Ayr United)
Ross Caldwell (Cowdenbeath)
Finn Graham (Berwick Rangers)
Dougie Hill (Alloa Athletic)
Gareth Rodger (Forfar Athletic)
Elliot Ford (Raith Rovers)
East Fife
Willie Muir (Queen's Park)
Chris Kane (Cowdenbeath)
Chris Duggan (Partick Thistle)
Mark Lamont (Stirling Albion)
Tony Wallace (Nairn County)
Scott Robinson (Dunfermline Athletic)
Ross Mutch (AM Soccer Club)
Kevin O'Hara (Falkirk, loan)
Livingston
Jordan Sinclair (Hibernian)
Sean Crighton (Airdrieonians)
Alan Lithgow (Airdrieonians)
Nicky Cadden (Airdrieonians)
Shaun Byrne (Dunfermline Athletic)
Michael Miller (Morton)
Thomas Orr (Morton, loan)
Liam Kelly (Rangers, loan)
Dale Carrick (Kilmarnock)
Peterhead
Scott Rumsby (Stranraer)
Fraser Hobday (Huntly, loan)
Hugh Samuels (Cobham FC)
Salim Nassor (Ternana Calcio)
Fiacre Kelleher (Celtic, loan)
Queen's Park
Ross Millen (Clyde)
Josh Watt (Cumnock Juniors)
Darren Miller (Kilbirnie Ladeside)
Aiden Malone (Cumnock Juniors)
Mark Williams (Alloa Athletic)
Anton Brady (East Kilbride)
Andrew Murphy (Fauldhouse United)
Gregor Fotheringham (Camelon Juniors)
Adam Cummins (Bangor City)
Stenhousemuir
Colin McCabe (Celtic, loan)
Vincent Berry (Queen's Park)
Fraser Kerr (Cowdenbeath)
Jack Smith (East Kilbride)
Stranraer
Smart Osadolor (Annan Athletic)
Scott Agnew (St Mirren)
Cameron Belford (Wrexham)
Frank McKeown (Morton)
Liam Dick (Falkirk)
Ross Barbour (Kilmarnock)
Christian Nade (Dumbarton)
Giuliano Morena (ASD Romagna Centro)
Ladbrokes League 2
Annan Athletic
Max Wright (East Stirlingshire)
David McKenna (East Stirlingshire)
Alex Mitchell (Workington Reds)
Raffi Krissian (Edusport Academy)
Tony Ribeiro (Edusport Academy)
Jean Guy Lucas (Edusport Academy)
Przemyslaw Dachnowicz (Rangers)
Barry Cuddihy (St Mirren)
Willie Robertson (Stirling Albion)
Adam Asghar (Alloa Athletic)
Stewart Sharkey (Yoker Athletic)
Arbroath
Steven Doris (Stirling Albion)
Michael Dunlop (Forfar Athletic)
Colin Hamilton (Alloa Athletic)
Omar Kader (Forfar Athletic)
Gavin Malin (Forfar Athletic)
Bryan Prunty (Airdrieonians)
Ryan McCord (Raith Rovers)
Robbie Mutch (Aberdeen, loan)
Josh Thomson (Cowdenbeath)
Ricky Gomes (Atletico Club Malveira)
Martin Scott (Salgaocar)
Gary Phillips (Largs Thistle)
Liam Callaghan (Cowdenbeath)
Berwick Rangers
Jordyn Sheerin (Livingston)
Kevin McKinlay (Stirling Albion)
Lee Hamilton (Stirling Albion)
Sean Brennan (Hibernian)
Steven Thomson (Musselburgh Athletic)
Ben Stirling (Hibernian, loan)
Sean Mackie (Hibernian, loan)
Clyde
Matty Flynn (Annan Athletic)
Martin McNiff (Annan Athletic)
Phil Johnston (Stirling Albion)
Jordan Lowdon (Arbroath)
Ewan McNeil (Berwick Rangers)
Dylan Easton (Elgin City)
Michael Oliver (Cumbernauld Colts)
Peter MacDonald (Morton)
Cowdenbeath
Fraser Mullen (East Fife)
Craig Sives (Livingston)
David McGurn (Raith Rovers)
Lewis Moore (Hearts, loan)
Greg Ross (Penicuik Athletic)
Burton O'Brien (Alloa Athletic)
Shaun Rutherford (Queen of the South)
Gary Glen (Livingston)
David Robertson (Selkirk)
Kris Renton (Newtongrange Star)
Chris Turner (Hamilton Accies)
Gerry McLauchlan (Ayr United)
James Creaney (Hurlford United)
Brian Ross (Fauldhouse United)
Nikolay Todorov (Hearts, loan)
Edinburgh City
Neil Martyniuk (St Johnstone)
Dean Cummings (Lothian Thistle Hutchison Vale)
Ryan Porteous (Hibernian, loan)
Craig Beattie (Stirling Albion)
Calum Antell (Nairn County)
Elgin City
Keiran Stewart (Arbroath)
Jamie Reid (Arbroath)
Chris Dodd (Jeanfield Swifts)
Chris McLeish (Jeanfield Swifts)
Shane Sutherland (Peterhead)
Forfar Athletic
Jamie Bain (Airdrieonians)
David Cox (Airdrieonians)
Jim Lister (Airdrieonians)
Stuart Malcolm (Stenhousemuir)
Grant Adam (Cowdenbeath)
Lewis Milne (Cowdenbeath)
Andy Munro (Arbroath)
Marc Scott (Carnoustie Panmure)
Josh Peters (Hibernian)
Montrose
Michael Bolochoweckyj (Clyde)
Allan Fleming (Arbroath)
Jordan Millar (St Johnstone)
Chris Hegarty (Buckie Thistle)
Ross Lennie (Bathgate Thistle)
Gregor Anderson (Tayport)
Iain Campbell (Forfar Athletic)
Stirling Albion
Bryan Hodge (Forfar Athletic)
Marc McKenzie (Elgin City)
Eddie Ferns (Alloa Athletic)
Darren Petrie (Raith Rovers)
Jack McCue (Airdrieonians)
Jamie Mills (Rangers)
Blair Henderson (Berwick Rangers)
Alex Docherty (Maryhill Black Star)
