Boro have brought in centre-back Darragh Lenihan, goalkeeper Liam Roberts and wideman Ryan Giles ahead of the 2022/23 campaign, with more arrivals expected.
After narrowly missing out on the play-off places last season, Chris Wilder’s side will have aspirations of winning promotion this campaign.
Still, some sides will have the advantage of Premier League parachute payments as they aim to return to the top tier.
Here are all the signings that have been made by Championship clubs so far this summer:
Still, some sides will have the advantage of Premier League parachute payments as they aim to return to the top tier.
5. Burnley
IN: Scott Twine (undisclosed, MK Dons), Luke McNally (undisclosed, Oxford), CJ Egan-Riley (free Manchester City), Taylor Harwood-Bellis (loan, Burnley) | OUT: Ben Mee (released), Aaron Lennon (released), Phil Bardsley (released), Dale Stephens (released), Erik Pieters (released), Joel Mumbongo (released), Richard Nartey (released), Anthony Glennon (Grimsby), Anthony Gomez Mancini (released), Nick Pope (Newcastle), Lukas Jensen (loan, Accrington Stanley), James Tarkowski (Everton) Photo: James Gill
6. Cardiff
IN: Ebou Adams (free, Forest Green), Jak Alnwick (free, St Mirren), Ollie Tanner (undisclosed, Lewes), Jamilu Collins (free, Paderborn), Callum O'Dowda (free, Bristol City), Vontae Daley-Campbell (free, Leicester), Mahlon Romeo (free, Millwall), Ryan Allsop (free, Derby), Andy Rinomhota (free, Reading) | OUT: Sam Bowen (Newport), Chanka Zimba (loan, Newport), Aden Flint (Stoke), Will Vaulks (Sheffield Wednesday), Marlon Pack (Portsmouth), Leandro Bacuna (released), Ciaron Brown (released), Josh Murphy (released), Alex Smithies (released), Isaac Vassell (released), James Connolly (Bristol Rovers) Photo: Dan Mullan
7. Coventry
IN: Kasey Palmer (undisclosed, Bristol City) | OUT Jordan Shipley (Shrewsbury), Jodi Jones (released), Josh Pask (released), Declan Drysdale (Newport) Photo: Marc Atkins
8. Huddersfield
IN: Will Boyle (free, Cheltenham) | OUT: Josh Austerfield (loan, Harrogate), Romoney Crichlow (loan, Bradford), Jaheim Headley (loan, Harrogate), Alex Vallejo (released), Reece Brown (Forest Green), Jamal Blackman (released), Fraizer Campbell (released), Naby Sarr (released), Carel Eiting (released) Photo: Gareth Copley