Middlesbrough have already brought in four new players following the arrivals of Joe Lumley, Sammy Ameobi, Lee Peltier and Uche Ikpeazu.
Boro boss Neil Warnock still wants to make ‘four or five’ more signings this summer as the Teessiders look to challenge for promotion from the Championship.
Several other second-tier clubs have also strengthened in recent weeks, while some are yet to make their first signing of the summer.
Now that Championship clubs have returned for pre-season training and contracts have expired, more deals are expected to take place in the coming weeks.
The first Championship match of the season is set to take place on Friday, August 6 when Bournemouth host West Brom.
As clubs step up their pre-season preparations, we’ve put together a Championship XI of players who have joined new clubs so far this summer.
5. LB: Scott Malone - Millwall
Millwall's first-choice left-back last season when he made 41 league appearances during a loan spell. The 30-year-old has now signed for The Lions on a permanent deal.
Photo: Naomi Baker
6. RW: Jordan Graham - Birmingham
A player who impressed in League One for Gillingham last season, when he scored 12 goals and provided six assists. The 26-year-old has signed for Birmingham on a free transfer after his contract expired.
Photo: George Wood
7. CM: Alex Mowatt - West Brom
One of the standout players in the Championship last season as he helped Barnsley secure a surprise play-off place. The 26-year-old turned down a new contract with The Tykes and has signed for West Brom, now managed by former boss Valerien Ismael.
Photo: Clive Rose
8. CM: Emiliano Marcondes - Bournemouth
Could be one of the bargains of the summer. The 26-year-old fell down the pecking order at Brentford last season but clearly has lots of ability. He's now joined Bournemouth on a free transfer.
Photo: Catherine Ivill