Middlesbrough and their Championship rivals have until October 16 to complete domestic transfers, with the Teessiders still looking to make a few more additions before the deadline.
Other second-tier clubs are also set to complete their business over the next week – scroll down and flick through our galley to see every signing made by Championship clubs so far this window:
1. Barnsley
IN: Kilian Ludewig (loan, Red Bull Salzburg), Dominik Frieser (LASK Linz), Isaac Christie-Davies (Liverpool), Michal Helik (KS Cracovia), Jack Aitchison (Celtic) | OUT: Dani Pinillos, Kenny Dougall, Mamadou Thiam, Samuel Sahin-Radlinger, Mallik Wilks, Toby Sibbick (loan), Cameron McGeehan (loan) Jordan Green (loan), Jordan Barnett, Jacob Brown, Marcel Ritzmaier (loan), Jack Aitchison (loan) Photo: George Wood
2. Birmingham
IN: George Friend (Middlesbrough), Jon Toral (Hull City), Ivan Sanchez (Elche), Jonathan Leko ( West Brom), Andres Prieto (Espanyol), Adam Clayton (Middlesbrough), Neil Etheridge (Cardiff City), Scott Hogan (Aston Villa), Mikel San Jose (Athletic Bilbao) Riley McGree (loan, Charlotte FC) | OUT: Jonathan Grounds, Jacques Maghoma, Cheick Keita, Craig Gardner, David Stockdale, Kerim Mrabti, Jude Bellingham, Alvaro Gimenez, Connal Trueman, Corey O'Keeffe, Wes Harding, Remeao Hutton, Fran Villalba, Steve Seddon, Agus Medina, Charlie Lakin, Cheikh N'Doye. Photo: Alex Burstow
3. Blackburn
IN: Thomas Kaminski (KAA Gent), Daniel Ayala (Middlesbrough), Antonis Stergiakis (Slavia Sofia) | OUT: Jack Evans, Tom White (loan), Matty Platt, Dominic Samuel, Jayson Leutwiler, Sam Hart, Danny Graham, Richard Smallwood Photo: George Wood
4. Bournemouth
IN: Rodrigo Riquelme (loan, Atletico Madrid) | OUT: Jermain Defoe, Jordon Ibe, Ryan Fraser, Artur Boruc, Charlie Daniels, Andrew Surman, Simon Francis, Nathan Ake, Frank Vincent (loan), Aaron Ramsdale, Tyler Corner (loan), Matt Butcher, Shaun Hobson, Callum Wilson, Brad Smith, Harry Arter, Kyle Taylor (loan) Photo: Marc Atkins