Derby have signed midfielder Tom Huddlestone from Sky Bet Championship rivals Hull on a two-year deal with the option of a further 12 months.
Manchester United goalkeeper Sam Johnstone has joined Aston Villa on a season-long loan.
Sunderland announced the double signing of Aiden McGeady and James Vaughan on Thursday.
Martin Braithwaite has completed his move from Toulouse to Middlesbrough to hand manager Garry Monk his third summer signing, the club has confirmed.
Harry Arter has signed a new four-year contract at Bournemouth.
Deloitte's Annual Review of Football Finance reveals records for earnings, spending and tax in England's top-four divisions in 2015-16.